This threaded spiral coil repair tool kit is made of high-speed steel and a red plastic handle, which is sturdy and durable and can be used for daily repairs, car repairs, drilling machines, etc.; it is made of high-quality stainless steel. It is an essential tool for auto mechanics and can effectively thread rusted fasteners, car cylinder heads, engine blocks, and bolt holes on the car body, ensuring smooth threading of studs and spark plugs. This thread The repair kit is used to repair or replace damaged or stripped internal threads. Suitable for engine repair and other automotive applications. Put the wire thread insert into the screw hole of the workpiece such as aluminum alloy to form a standard internal thread with high strength, wear resistance and high precision. The set includes: a safety pin tool*1, twist drill*1, wire sinker*1, hexagonal wrench*1, screw insert*10, storage box*1 This thread repair kit is designed to repair stripped, damaged or worn threads of various materials (including aluminum, iron, carbon steel, bronze, magnesium, etc.)! Suitable for machining, automotive repair and equipment maintenance.thread repair kit helicoil helicoil thread repair kit helicoil kit heli coil thread repair kits rethreading tool kit thread chaser set thread repair tool m6 helicoil kit m6x1.0 helicoil kit m12 tools