The package only contains 75 pieces MaterialMade of high speed steel and red plastic handle, sturdy and durable. Ideal for repairing damaged threads. Color: Red + Silver. ApplicationThis thread repair kit is suitable for M5 M6 M8 to repair damaged or worn threads. Steel, cast iron and aluminum applications. Widely UsedIt can be used for daily maintenance, car maintenance, drilling, etc. Ideal for engine repair and other automotive applications to repair damaged threads. FeaturesThis thread repair kit is suitable for M5 - M8 to repair damaged or worn threads. A spring-loaded insert spool produces a thread that is stronger than raw metal. Package IncludedTotal 75 pieces helical thread repair recoil insert kit. Thread repair kit includes thread inserts, drill bits, taps, insert installer, lug removal tool.