{"product_id":"tsprof-k4-usa-edition-bundle","title":"TSPROF K4 BLACKWING USA Edition National Hunting \u0026 Fishing Day Bundle","description":"\u003cp\u003e\u003c!-- more --\u003e\u003c\/p\u003e\n\u003cp\u003e\u003c!-- more --\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTSPROF K4 2026\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis the most sophisticated and thought-out knife sharpening system in the lineup, which combines advanced technology with unrivaled precision.\u003cspan style=\"color: rgb(242, 58, 58);\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/K4_USA_HERO_1600x900_a5fb7255-9394-45a6-801c-a83fcee9afa6.jpg?v=1789894696\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003eK4 BLACKWING USA Edition\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eSome machines become icons long after they leave the sky.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThere was a time when American aircraft were designed with almost brutal clarity: every lever had a purpose, every surface served the machine, and every marking meant something.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eNo decoration without function. \u003c\/span\u003e\u003cspan\u003eNo complexity without reason.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThat spirit became the inspiration for \u003c\/span\u003e\u003cstrong\u003eBLACKWING\u003c\/strong\u003e\u003cspan\u003e, the \u003cstrong\u003eUSA Edition\u003c\/strong\u003e of the \u003cstrong\u003eTSPROF K4\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eIts deep navy and matte black surfaces recall the machines of American naval aviation — aircraft built to operate from steel decks, surrounded by salt, wind, fuel, and machinery. White technical graphics and precision engravings give the K4 the character of equipment rather than decoration.\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003eLook closer and the resemblance becomes less about appearance and more about philosophy. The K4 is built around control.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe K4 Blackwing USA Edition body parts are machined from aircraft-grade aluminum and finished in \u003cstrong\u003ematte black \u0026amp; navy blue anodizing\u003c\/strong\u003e. \u003c\/span\u003eThis choice goes beyond aesthetics and directly improves the system’s durability and \u003cstrong\u003eprotection \u003c\/strong\u003efrom\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecorrosion\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand minor\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emechanical damage\u003c\/strong\u003e, increases \u003cstrong\u003eenvironmental exposure resistance\u003c\/strong\u003e, and keeps its\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecolor\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eover time.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cmeta charset=\"utf-8\"\u003e\u003cb id=\"docs-internal-guid-20fb2a71-7fff-c6d3-e42c-8ac6cfc28ead\"\u003e\u003cspan\u003eNavy blue \u003c\/span\u003e\u003c\/b\u003enavy components break up the silhouette, while engraved markings give every K4 Blackwing its visual identity.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe result isn't simply a TSPROF K4 in another color. \u003c\/span\u003e\u003cspan\u003eIt is a different character entirely. \u003cmeta charset=\"utf-8\"\u003e\u003c\/span\u003e\u003cspan\u003eA machine built for one mission: superiority in precision knife sharpening.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003e\n\u003cspan style=\"color: rgb(242, 58, 58);\"\u003e🎁 \u003c\/span\u003eTSPROF Knife Sharpening Course\u003c\/h2\u003e\n\u003cp\u003eThis kit comes with a \u003cstrong\u003e\u003cs\u003e$100\u003c\/s\u003e \u003cspan style=\"color: rgb(242, 58, 58);\"\u003efree \u003c\/span\u003elifetime access\u003c\/strong\u003e to TSPROF Professional Knife Sharpening Course. TSPROF is more than a manufacturer. For over 15 years, we have studied edge geometry, steel behavior, and abrasive performance at an engineering level. This course brings it all together in \u003cstrong\u003e23 lessons\u003c\/strong\u003e, taking you from hesitation to confidence, and from basic skills to sharpening knives at a professional level.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eCarrying case \u0026amp; EVA insert\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eTSPROF \u003c\/strong\u003eimpact-resistant \u003cstrong\u003ecase \u003c\/strong\u003eis a versatile accessory designed for convenient storage and safe transport of TSPROF K4 sharpening system, with dedicated compartments for all essential sharpening accessories.\u003c\/p\u003e\n\u003cp\u003eThe case is made of high-strength plastic (\u003cstrong\u003epolyurethane\u003c\/strong\u003e) and features secure latches, a rubber seal along the inner perimeter of the lid for airtight protection, and a pressure relief valve for equalized internal pressure.\u003c\/p\u003e\n\u003cp\u003eThe \u003cstrong\u003evalve \u003c\/strong\u003eunder the handle allows the case to be \u003cstrong\u003efully sealed \u003c\/strong\u003efrom the external environment when closed, and to \u003cstrong\u003eequalize pressure\u003c\/strong\u003e during air transport when open.\u003c\/p\u003e\n\u003cp\u003eThe protective \u003cstrong\u003ecase \u003c\/strong\u003eweighs \u003cstrong\u003e4.2 kg\u003c\/strong\u003e and is rated \u003cstrong\u003eIP67\u003c\/strong\u003e for water and dust resistance.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/K4_USA_Swiveling_1600x900_d70aee4d-4fc8-4a67-81cd-6764fef7b733.jpg?v=1789893820\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSwiveling mechanism\u003c\/h2\u003e\n\u003cp\u003eThe insides of the unit have been completely redesigned. The\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enew design\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eprovides greater rigidity in holding the horizontal position of the frame and allows only 0.1° of arm deflection at a force of 30N. \u003c\/p\u003e\n\u003cp\u003eA screw at the back of the turning mechanism allows you to adjust the force required to flip the clamping arm. \u003c\/p\u003e\n\u003cp\u003eThe ability to fully lock the flip will be useful during reprofiling of the knife when it is subjected to heavy loads and vibrations, as well as when sharpening particularly long blades, when you need additional protection against accidental flipping.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/K4_USA_Hinge_Unit_1600x900_5acaedb4-d338-4840-b96a-a394fea53ac2.jpg?v=1789894316\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003eThree-stage angle adjustment\u003c\/h2\u003e\n\u003cp\u003eThe K4 rack and pinion height adjuster allows easy, fast, and precise setting of the sharpening angle. \u003c\/p\u003e\n\u003cp\u003eLocking of moving elements of the unit can be done with one hand and ensures reliable locking in the desired position. \u003c\/p\u003e\n\u003cp\u003eThe new angle setting mechanism has\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ethree adjustment levels\u003c\/strong\u003e: \u003cbr\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003erough\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eadjustment (accuracy\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eup to 1°\u003c\/strong\u003e) with an extendable slider;\u003cbr\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003efine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eadjustment (\u003cstrong\u003eup to 0.1°\u003c\/strong\u003e) with a rack and pinion mechanism;\u003cbr\u003e-\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eultra-fine\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eadjustment (\u003cstrong\u003eup to 0.01°\u003c\/strong\u003e) with the micro-adjustment unit.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003emicro-adjustment unit\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eallows you to change the angle with maximum precision, which is particularly useful for deburring and working with the finest abrasives.\u003c\/p\u003e\n\u003cp\u003eThe arrangement of the sharpening system parts allows you to set the sharpening angle in the range from\u003cstrong\u003e\u003cspan\u003e \u003c\/span\u003e9° to 39.5° per side\u003c\/strong\u003e, for knives up to 430 mm in length.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eThickness compensator\u003c\/h2\u003e\n\u003cp\u003eThe height adjuster is equipped with a removable stone thickness compensator. It provides a quick adjustment of the angle during stone change.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eAbrasive holder\u003c\/h2\u003e\n\u003cp\u003eA brand\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enew method of mounting\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ethe stroke\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003elimiters\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eand the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003ecoupling\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eon the rod provides increased mounting security and ensures immobility of the elements during operation.\u003c\/p\u003e\n\u003cp\u003eInstead of point locking with a screw, the mechanism now uses surface locking through cylindrical sleeves with holes. This reduces the force required to secure the elements and eliminates the possibility of the rod surface damage.\u003c\/p\u003e\n\u003cp\u003eThe front abrasive stop provides convenient abrasive mounting. It features a spring-loaded ball screw, which prevents free rotation of the stop on the rod and ensures smooth running.\u003c\/p\u003e\n\u003cp\u003eThe hinge unit incorporates a stainless steel-brass sliding pair for smooth rod travel during use.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eRod parking\u003c\/h2\u003e\n\u003cp\u003eThe K4 carries over the stroke limiter and L-shaped piece from the K03, while introducing an upgraded parking system. With subtle refinements to the kinematic scheme, it delivers greater ease of use.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/K4_USA_Axicube_1600x900_5558d7dd-5a3f-4aed-bddf-fed214034cb4.jpg?v=1789893995\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003eNew detachable Axicube Shift\u003c\/h2\u003e\n\u003cp\u003eNow\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAxicube Shift sits on the far abrasive stop\u003c\/strong\u003e. It can be quickly and easily removed to reduce abrasive weight during sharpening and for easy charging away from the sharpening system. Far and close abrasive stops' positions are interchangeable.\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003enew mounting\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e, featuring a special rail\u003c\/strong\u003e in combination with a locking screw and a magnet, provides an \u003c\/span\u003eeasy and secure attachment of the angle finder.\u003c\/p\u003e\n\u003cp\u003eAxicube Shift shows the current sharpening angle with an accuracy of 0.1° and helpts helps to control the sharpening angle in real time and track angle changes, for example, when changing the abrasive.\u003c\/p\u003e\n\u003cp\u003eThe bright display makes it easy to understand the readings in any light. The angle finder has a durable aircraft aluminum housing and is resistant to vibrations.\u003c\/p\u003e\n\u003cp\u003eThe Axicube Shift has a removable Li-pol battery and charges via a \u003cstrong\u003eUSB - USB Type-C \u003c\/strong\u003econnector. When the battery is low, the device displays “Lo.” upon startup. Charging takes 15–20 minutes at up to 0.5 A and 5 V.\u003c\/p\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/K4_USA_Clamps_1600x900_abd39060-89e3-42fd-934f-861396cbe175.jpg?v=1789894011\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch2 style=\"text-align: center;\"\u003eQuick USA clamps\u003c\/h2\u003e\n\u003cp\u003eThis limited USA edition kit features special engraving of the quick-release levers. The Quick clamps securely hold knives up to 7 mm thick. They provide a fast and tool-free usage and a 300 N clamping force. Designed with finite element analysis, the clamps' structure evenly distributes stress for uniform jaw closure.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eRemovable clamping arm\u003c\/h2\u003e\n\u003cp\u003eFancy a microscope edge inspection? The new removable design of the clamping arm will become your favorite feature of the K4. No need to take the knife out of the clamps or try and repeat its position and set the same sharpening angle anymore.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eRigid body and stable base\u003c\/h2\u003e\n\u003cp\u003eThe fresh design of the leg enhances the portability of the sharpener and allows you to carry it easily with one hand. It attaches to the milled base with three rigid quick-release screws. Thanks to its shape, weight, and wide, slim shock absorbers, the system remains stable during sharpening.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eAbrasives Included\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003eDiamond-coated plates provide intensive metal removal and can be used for a cutting edge with significant damage (chips, bends, etc.).  Use dry, without water or oil.\u003c\/p\u003e\n\u003cp\u003eIncludes the following grit range:\u003cbr\u003e— F150 Extra Coarse - for profiling, and shaping the edge.\u003cbr\u003e— F220 Coarse - reducing sharpening scratches.\u003cbr\u003e— F400 Medium - reducing sharpening scratches, biting edge.\u003cbr\u003e— F600 Fine - pre-finishing, biting edge.\u003cbr\u003e— F1000 Very Fine - finishing, deburring, gives mirror polish for some steels.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eThis K4 USA Edition Bundle Includes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTSPROF К4 2026 body with integrated base\u003c\/li\u003e\n\u003cli\u003eTSPROF abrasive holder with Axicube Shift\u003c\/li\u003e\n\u003cli\u003eTSPROF Quick Fillet clamps, red - 2 pcs.\u003c\/li\u003e\n\u003cli\u003eSet of five diamond coated plates\u003c\/li\u003e\n\u003cli\u003eProfessional Sharpening Course - lifetime access.\u003c\/li\u003e\n\u003cli\u003eSpare parts\u003c\/li\u003e\n\u003cli\u003ePackaging: TSPROF Protective Case, EVA insert \u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 style=\"text-align: center;\"\u003eSpecifications:\u003c\/h2\u003e\n\u003ctable class=\"bordered-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eSharpening angle\u003c\/td\u003e\n\u003ctd\u003e9° – 39.5° per side\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnife length\u003c\/td\u003e\n\u003ctd\u003eup to 430 mm \/ 17\" in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAngle setting precision\u003c\/td\u003e\n\u003ctd\u003eup to 0.01°\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAbrasive length\u003c\/td\u003e\n\u003ctd\u003eup to 210 mm \/ 8.3\" in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eKnife spine thickness\u003c\/td\u003e\n\u003ctd\u003e1 – 7 mm \/ 0.04\" – 0.28\" in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eClamping force\u003c\/td\u003e\n\u003ctd\u003eup to 300 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSharpener weight\u003c\/td\u003e\n\u003ctd\u003e2.9 kg \/ 6.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase weight\u003c\/td\u003e\n\u003ctd\u003e2.9 kg \/ 6.5 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAngle adjustment levels\u003c\/td\u003e\n\u003ctd\u003e3 (rough, fine, ultra-fine)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMoving parts materials\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003estainless steel, brass\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eAngle finder charging\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003eUSB Type-C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"TSPROF","offers":[{"title":"Default Title","offer_id":44097205272635,"sku":null,"price":1541.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0103\/2477\/0875\/files\/k4_usa_edition_labor_day.png?v=1788346699","url":"https:\/\/tsprof.us\/products\/tsprof-k4-usa-edition-bundle","provider":"TSPROF","version":"1.0","type":"link"}