Features 1、These screw extractors are made of high‑speed steel quenched and forged, and the hardness reaches HRC‑60‑63. 2、Using coarse‑tooth left‑rotating thread design, strong pulling force, not easy to fall off. 3、Used to quickly and easily pull out broken screws, pipes and bolts that cannot be removed with a standard screwdriver. 4、The kit contains 6 extractors of different specifications, suitable for wood screws, iron screws, and steel screws of different strengths. 5、Equipped with a plastic box, it is convenient to store and maintain these screw extractors. Specification Item Type: Screw Extractor Material: High speed steel Purpose: Take out broken screws Application Scope: 1/8-1/4in (M3-M6) 1/4-5/16in (M6-M8) 5/16-7/16in (M8-M11) 7/16-9/16in (M11-M14) 9/16-3/4in (M14-M18) 3/4-1in (M18-M25) Package List 6 x Screw Extractor 1 x Storage Box