This 49-piece thread chaser set repairs damaged or rusted internal and external threads on bolts, studs, cylinder heads, engine blocks, and lugs without replacing the fastener. Three standards (UNC, UNF, and Metric) are color-coded silver, black, and gold for fast visual ID, and 22 taps plus 24 dies cover common shop sizes from 1/4 in to 5/8 in and M6 to M14. Three thread files (two SAE and one Metric) handle exposed thread damage on bolt shanks, with removable blade covers protecting cutting edges. Heat-treated HSS construction at HRC 55-62 stays sharp through hundreds of restorations.
49-pc Set 22 Taps 24 Dies 3 Files: 49-piece set includes 22 thread taps 24 dies and 3 thread files for internal and external thread repair on bolts and engine parts
3 Color-Coded Standards: UNC silver UNF black and Metric gold sets are color-coded for instant visual ID at the bench so you grab the correct chaser without squinting
HSS HRC 55-62 Build: Heat-treated HSS steel at HRC 55-62 hardness keeps the cutting edges sharp through hundreds of thread restorations on rusted bolts and engine studs
Mechanic and DIY Use: Restores rusted threads on bolt holes cylinder heads engine blocks lug nuts brake calipers and farm equipment for pro mechanics and home DIYers
Storage Case with Blade Covers: Includes a fitted storage case for organized transport and removable plastic blade covers shield cutting edges and protect hands
Specification: Color: Red & Black; Quantity: 49 Pcs; Material: HSS; Removable: Yes; Hardness: HRC 55-62; Standards: UNC + UNF + Metric; Includes: 22 Taps + 24 Dies + 3 Thread Files
