Features: - The color is Silver. - Rapid, portable, remove the screw ,pipe,damaged bolts. - The thread head has stronger grip and better use. Usage: - Speed can be changed in the opposite direction of rotation of the drill in conjunction. - The first thing to determine when using extractor , at the same time, ensure the safety of the tool and will not be moving. - Special tools for removing the wood in the head has been broken wood screws, stud in to give a head wood screws drilled, easy to use to take another head screws. - Reverse screw extractor and into the damaged screw counterclockwise until removed. Dimension: - 0# (Remove Dia) 6 x 54mm (Length) - 1# (Remove Dia) 8 x 54mm (Length) - 2# (Remove Dia) 10 x 54mm (Length) - 3# (Remove Dia) 12 x 54mm (Length) - 4# (Remove Dia) 14 x 54mm (Length)