Features: 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. Spiral-cut teeth provide positive grip, remove circular or damaged bolts. Can be-driven with a-metric spanner or socket. Remove the nut is-ten sets of different sizes suitable for damaged, rusted nut bolt, this is-taken as unscrew screws, nuts and the most important conducting stabilization tool. This is-a set of 10 pieces 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 Color:Black 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.