Description:  4pcs Small Size Double Side Damaged Screw Extractor Bolt Stud Remover Tool.    Features:  Small size, fit for small size damaged screw, bolt, stud.  Make small screws can also be removed.  High qualityAlloy steel (S2) material.  Rapid, portable, remove the screw ,pipe, bolts have been damaged.  Perfect for removing screw from wood.    Specification:  Material: S2 Alloy;  Hardness: HRC58-62;  Model Remove Dia;  1                 2-2.5mm;  2 2.5-3mm;  3 3-4mm;  4 4-6mm;    Usage:  1, With the speed can be change and  -direction of the electric drill.  2, the first thing to determine when using extractor and ensure the safety of the tool and will not be moving.  3, the screw head be damaged thicker than extractor , with the drilling head end drill a hole( deep enough) in the middle of the screw head.  4, reverse screw extractor and into the damaged screw counterclockwise, until removed.    Package Included:   1X Set (4pcs)Screw Extractor