Features 1、Adopt high quality GCR15 tool steel manufacturing, have a long serving life 2、This screw extractor set through strict process, surface polishing, feature high hardness, strong torque 3、Suitable for removing all kinds of damaged head bolts, screws 4、Works on wood and machine screws as well as PH, flat, hex or painted over screws 5、Can be applied to maintain household, office, and so on Specification Features: Adopt high quality GCR15 tool steel manufacturing, have a long serving life. This screw extractor set through strict process, surface polishing, feature high hardness, strong torque. Suitable for removing all kinds of damaged head bolts, screws. Works on wood and machine screws as well as PH, flat, hex or painted over screws. Can be applied to maintain household, office, and so on. Specifications: Material: steel Color: as the picture Packaging: plastic box Size: as the picture Package Included: 1 x 6 pcs/set screw extractor Package List