Feature: *Stud extractor tool uses 3/8 inch-drive, best used with wrench and ratchet. Also compatible with with flat wrenches, adjustable wrenches, sockets, and locking pliers. *This extractor tool is adjustable to fit studs that are 1/4-inch to 1/2-inch(6mm to 12mm). Manufactured with a Chrome Vanadium Body with Chrome Jaws and will remove broken and damaged threaded studs fast. *This extractor tool is easy to operate and can help you get more rest time, whether it is the exhaust manifold, fuel , broken bolts, or broken, painted, rusted fastening screws The posts are effectively removed, but the threaded may be slightly worn due to the strong clamping force. Operational guidance: *Place the stud extractor on the stud and turn the bottom hex flat nut counterclockwise to tighten the jaws. *After the jaws hold the broken bolt or stud firmly, continue to rotate the stud counterclockwise until it is removed. *Then release and separate them in a clockwise direction. *But the threaded may be slightly worn due to the strong clamping force. Specification: Product name: Stud Remover Extractor Material: Steel Color: Silver+ Black Size:(Approx.) 74*40mm Scope of application: 6-13mm Connect: 3/8''(9.6mm) Suitable for: Removing 6-13mm broken screws Quantity: 1Pc Package Included: 1 Broken Bolt Remover Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data. _x000D_