Double-ended with tapered thread and Winslow-tipped end for reaming and burnishing the damaged area to prepare the fixing for removal. Serrated extracting end results in greater torque for hard-to-remove screws and hex shoulder aids removal of jammed screws or bolts. Removes damaged screws, machine screws and broken bolts made of any alloy including soft brass from wood, metal and plastic and in-drive head styles including Phillips, PZ, slotted, hex, TX, square and tri-wing. Suitable for screws from numbers 6-14 and broken bolts from size M4-M8.