APPLICATION - This damaged nut bolt remover with corrosion protection are designed for the removal of damaged bolts, screws and nuts. FEATURES - 100% new and high quality. Spiral cut teeth provide positive grip, remove circular or damaged bolts. Can be driven with a metric spanner or socket. Also be used on screw heads and studs. Remove the nut is 13 sets of different sizes suitable for damaged, rusted nut bolt, this is taken as unscrew screws, nuts and the most important conducting stabilization tool. size: 6-19mm Material:Chrome vanadium steel colour:Black + blue Package Contents: 13 * Bolt Nut Remover 1 * box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.