This Trend GRAB/SE1/set Damaged Screw Remover Set (2pc) has versatile double-ended bits to remove damaged screws, machine screws and broken bolts from wood, metal and plastic. Made from high-speed steel they can remove screw sizes from Nos. 6 - 14 and broken bolts from size M4 - M8, they will remove these cleanly from wood, metal or plastic. Removing screws made of any alloy, including soft brass, and also removes free spinning screws. They have a Winslow tip for self-centring and are double ended (burnisher and tapered thread). The hex shoulder aids removal of jammed screws or bolts and the serrated extracting end of the tool results in torque for hard to remove screws. Specifications Set of two bits, Size No 2 and No 3. Screw Sizes No 6 to No 14. Bolt Sizes M4 to M8.