Due to heat generate by the Coppers pipe and Coppers pipe Expander in the rotations expansion, please do not touch directly with your hands, wait for the Coppers pipe to cooling down, then operate to avoid injury to your hands This Tube Expander Tool is selected from metal with highly temperature hardening process, not easy to break and deformation, safe to use Use the electric drill Swaging Tool not only can expand the Coppers pipe, but also expand pipe mouth function, 5 size of drill bit, suitable for most of the Coppers pipe, help repair, refrigerator repair, Coppers pipe repair The Coppers Pipe Expander Swaging Tool work with electric drill, easy to expand Coppers pipe The electric drill is highly efficient and fast and providing significant result This Repair Swage Tube Expander Tool have 5 different size of drill bit, 5 in 1 including 1 / 4 " （ 6MM）, 3 / 8 " （ 10MM）, 1 / 2 " （ 12MM）, 5 / 8 " （ 16MM）, 3 / 4 " （ 19MM, Manufacturer: Buxuaaaa