Milwaukee Tool has introduced the new M12 Brushless 1.25-2-in. Copper Tubing Cutter. The product automatically adjusts diameter to cut Type K, L and M copper pipes from 1.375 to 2.125 in.

Continue tightening and rotating the cutter until the pipe snaps off, about eight turns in all. Use a reaming tool ... Clean the inside of the copper pipe fittings with a special wire brush ...