CONQUER Tools attachment is made of alloyed zinc steel and features specialized high-speed cutting blades. It is designed to repair damaged threaded parts without needing to replace them. The tool can chamfer the ends of wooden, plastic, and metal components and is compatible with elements ranging from 1/8 to 3/4 inches in diameter. The cutting edge efficiently removes burrs, resulting in a smooth and clean finish. It can be used with screwdrivers and drills that have adjustable speed settings. For optimal performance, it should operate at speeds between 0-400 RPM. Compact in size, the attachment easily fits in a pocket. The shank size is 1/4 inch.