PURPOSE BUILT: The installation tools in this helicoil kit are constructed from high-speed steel for superior handling while the inserts are heated-treated 45# steel for greater strength and longevity in place.
DAYUAN 131PC SAE Thread Repair Kit, HSS Drill Helicoil Kit Standard, 1/4 5/16...
131PC SAE Thread Repair Kit, HSS Drill Helicoil Kit Standard, 1/4" 5/16" 3/8" 7/
131PC SAE Thread Repair Kit, HSS Drill Helicoil Kit Standard, 1/4 5/16 3/8 7/
SEDY SAE Thread Repair Helicoil Kit - 131PC with HSS Drill Bits, 131-Pc.
