[SIZE]Includes 6 tools, 1 PC 1/4 inch quick change arbors and 5 PC extractors: #1. 1/8inch-1/4inch(-M6), #2. 1/4inch-5/16inch(M6-M8), #3. 5/16inch-7/16inch (M8-M11), #4. 7/16inch-9/16inch (M11-M14), #5. 9/16inch-3/4inch (M14-M19) [DESIGN]Rapid acting helix aids screw removal, 1/4 inch hex fits into all power tools more and securely, specially for locking into quick change chuck [Strong Applicability]This Screw Extractor can solute the issue of broken head screw, screw wire, screw stuck, screw effectively, which can help you in many areas. [ Design]Reverse thread bits remove screws, , studs, and threaded pipe fittings [APPLICATION]Remover quickly and effectively extracts damaged screws and nuts. It will your daily work more in car repair, , for craft production etc colour: silver-gray Material: steel Package Contents: 1 x 1/4 inch quick change arbors 5 x extractors