Kolvoii 52-Piece Large SAE Tap and Die Set, 1/4"-20 to 1"-14 Coarse and Fine Threads, Heavy-Duty GCr15 Steel Thread Repair & Rethreading Tool Kit for Internal & External Thread

Large-Size SAE Thread Coverage: 52-piece SAE tap and die set covering 1/4"-20 to 1"-14 in coarse and fine threads. Designed for cutting new threads, repairing stripped holes, and restoring large bolts in vehicles 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 SAE Thread Pitch Gauge & Spiral Extractors: Includes an SAE 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: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 SAE 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 52-Piece Large SAE Tap and Die Set — 1/4"-20 to 1"-14 Heavy-Duty Thread Repair Kit
The Kolvoii 52-piece SAE tap and die set is engineered for demanding threading and rethreading applications, covering a complete range from 1/4"-20 to 1"-14. Perfect for automotive repair, machinery service, engine rebuilding, fabrication work, and general workshop maintenance, this professional-grade kit delivers clean and accurate internal and external threads across a wide variety of metals.

Specifications:
Thread Range: 1/4"-20 to 1"-14 (coarse & fine)
Material: GCr15 bearing steel, heat-treated to ~60 HRC
Precision: CNC-machined cutting teeth
Applications: Thread repair, rethreading, fabrication, automotive and heavy machinery maintenance

Package Includes:
20 × SAE Taps (coarse and fine)
20 × SAE Dies (coarse and fine)
1 × Tap Wrench
1 × Die Wrench with Adapter
1 × Adjustable Tap Wrench
1 × T-Handle Tap Wrench
Spiral-Flute Extractors (3–18 mm)
1 × Flat Screwdriver
1 × Center Punch
1 × SAE Thread Pitch Gauge
Durable Blow-Molded Carrying Case

✔ Your Complete SAE Thread Repair Solution
Built for mechanics, technicians, and experienced DIY users, the Kolvoii SAE tap and die set provides industrial-grade strength, precision machining, and a full accessory kit for dependable thread cutting and repair. Whether restoring damaged fasteners, rebuilding engine components, or fabricating new parts, this comprehensive set ensures consistent, professional-quality results every time.