Large-Size Metric Thread Coverage: 52-piece metric tap and die set covering M6×0.75 to M24×3.0 in coarse and fine threads. Designed for cutting new threads, repairing stripped holes, and restoring large bolts in engines and machinery
Industrial-Grade GCr15 Bearing Steel (60 HRC): Heat-treated GCr15 steel delivers high wear resistance and torque strength. Maintains cutting accuracy under load without deformation, even during repeated rethreading tasks
Precision CNC-Machined Cutting Teeth: CNC-machined taps and dies produce clean, accurate internal and external threads on steel, stainless steel, aluminum, brass, copper, and cast iron while reducing friction and cross-threading
Metric Thread Pitch Gauge & Spiral Extractors: Includes a metric pitch gauge for fast and accurate thread identification. Spiral flute extractors help remove broken bolts or studs without damaging surrounding threads
Adjustable Tap & Die Wrenches for Control:Adjustable tap and die wrenches provide secure locking, precise alignment, and steady pressure across multiple sizes. Supports straight starts, stable engagement, and consistent threading under heavy load
Complete Accessory Kit: Includes 20 taps, 20 dies, a tap wrench, die wrench with adapter, T-handle wrench, adjustable tap wrench, spring-flute extractors (3–18 mm), a flat screwdriver, center punch, and a metric pitch gauge—all neatly stored in a durable blow-molded case
Built for Heavy Equipment & Industrial Repairs: Designed to restore large stripped threads on trucks, farm equipment, engines, structural hardware, and heavy machinery—trusted by mechanics, technicians, and serious DIY users
Kolvoii 81-Piece Tap and Die Set, SAE & Metric #4–1/2" & M3–M12, Heavy-Duty GCr15 Steel Rethreading Tool Kit with Coarse & Fine Threads for Cutting & Rethreading Internal and External Threads
KWD 25
Kolvoii Carbide-Tipped Annular Cutter, 3/4" Diameter x 1-3/8" Depth, 3/4" Weldon Shank (2 Flat) TCT Mag Drill Bit for Stainless Steel, Cast Iron, Hard Steel, High-Speed Cutting with Pilot Pin
KWD 11.500
Kolvoii 2"(51mm) TCT Hole Saw for Hard Metal, Tungsten Carbide Tipped Hole Saw Drill Bit Heavy Duty Carbide Hole Cutter with Titanium-Plated Pilot Drill bit
KWD 7
Kolvoii 2-Pack 7/8"(22mm) TCT Hole Saw Kit for Hard Metal, Tungsten Carbide Tipped Hole Saw Drill Bit Heavy Duty Carbide Hole Cutter with Titanium-Plated Pilot Drill bit
KWD 7.500
