Features: The internal thread with reverse-spiral flutes-design to bite down to provide maximum. Each surface-is precision-machined and resistant to corrosion. Internal left-handed spiral-design for extra-grip and faster tapping. The easy-out bolt extractor set can be used to remove broken stud, bolts, hexagon socket screws and fittings, or it can be used with a Various square drive wrenches for a-wider range-of applications. The nut & bolt remover set is-made of alloy-steel with phosphate acid and blackening treated, black oxide-surface provides greater corrosion-resistance and rust-resistance. Remove the nut is different sizes suitable for damaged, rusted nut bolt, this is-taken as unscrew screws, nuts and the most important conducting stabilization tool. This set nut remover set which for removing damaged, stripped, rusted or painted-fasteners (screws/nuts/bolts) of all types, can be used with a-combination wrench, adjustable wrench, pliers, vise-grips, or socket. Specifications: Material:Alloy Steel Size:As Picture Shown Extractor Set from 1/8inch (3.5mm) to 7/8inch (23mm) by 1/32” increments. Compare for the old Extractor, the new screw extractor set no needs to put a socket on the hexagon head before connecting the wrench to use. It is more convenient and-fast. Standard 3/8-inch drive design to let the screw extractor set be compatible for hand tools, power, or air tools. Package Includes: 1 Set Bolt & Nut Remover note: ①.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. ②.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings.