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. Note: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks for your understandings. Package includes: 1 Set Bolt & Nut Remover