This Hole Cutting Tool is specially designed to cut holes into steel pipe. It is clamp onto pipe for fixed position and straight alignment of work. It provides groove joint connection or welding for branching pipelines. Power Output: 560W Power Input: 1050W Hole Cutting Capacity: 1/4~4 1/2" RPM: 500 Chuck Size: 1 1/4~8" Drill Chuck: 13mm All types drill bits and hole saws available on supply.