Kolvoii 49-Piece Thread Chaser Set, Metric, UNC & UNF Thread Repair Kit

Key features

• METRIC & SAE THREAD REPAIR KIT: UNC(silver): 5/8”-11, 9/16”-12, 1/2”-13, 7/16”-14, 3/8”-16, 5/16”-18, 1/4”-20; UNF(black): 5/8”-18, 9/16”-18, 1/2”-20, 7/16”-20, 3/8”-24, 5/16”-24, 1/4”-28; Metric(gold): M14x1.5, M12x1.75, M12x1.5, M12x1.25, M11x1.5, M10x1.5, M10x1.25, M10x1.0, M8x1.25, M6x1.0
• REVIVE & PRESERVE THREADS: Restore worn, damaged, or corroded threads without compromising the integrity of your metalwork—get smooth, reliable fastening on spark plugs, engine blocks, pipe fittings, and more. Never wrestle with cross-threading again
• ENGINEERED FOR ENDURANCE: Each piece is forged from heat-treated carbon steel and coated (zinc or black oxide) for superior hardness, rust resistance, and longevity—designed to withstand frequent use
• FAST, FOOL-PROOF RETHREADING: Color-coded, hex-shaped taps and dies fit any standard wrench or socket. Thread files prep and deburr holes in one smooth operation
• WIDE APPLICATION: Ideal for mechanics, plumbers, and DIYers. Repair threads on cylinder heads, machinery parts, suspension bolts, household hardware, and specialized fittings—no specialist equipment needed
• ORGANIZED FOR ON-THE-GO WORK: Rugged blow-molded case with silver (UNC), black (UNF), and gold (Metric) coding keeps every tap, die, file, neatly in place—grab what you need and get back to work

Free shipping included. 30-day hassle-free returns.