[Chrome Molybdenum Steel Material] The bolt nut extractor kit is made of high hardness chrome molybdenum steel material, heat-treated for durability. Note: Oil on the remover to prevent rusting

[Spiral Design] Radical multi-flat teeth feature a left side spiral design that provides extra grip and faster threading. Surface is precision machined for extra durability

[Easy to Identify Size] Each piece has an etched mark for quick size identification. This allows you to choose the right extractor for your needs. Comes with a carrying case for easy portability and storage

[Widely Compatible] The screw remover kit is suitable for applying maximum torque using sockets and wrenches, and can also be used with hexagonal bits for a wide range of applications. Compatible with normal to heavy duty power tools, screwdrivers and screwdriver handle tools