[SIZE]Includes 6 , 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 more easily 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, rusty screw effectively, which can help you in many areas. [Special Design]Reverse thread bits easily remove screws, bolts, studs, and threaded pipe fittings [APPLICATION]Remover quickly and effectively extracts damaged screws and nuts. It will your daily work more convenience in car repair, home decoration, for craft production etc colour: silver-gray Material: steel Package Contents: 1 x 1/4 inch quick change arbors 5 x extractors Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.