The SPIN tools S6000 Swaging tool set is a 6-piece 1/4, 3/8, 1/2, 5/8, 3/4, and 7/8 in Swaging set that is developed for hard & soft copper. Recommended use with corded or cordless drills that are 1,800 RPM or faster, the SPIN tools Swaging tools high-temperature swaging method preserves the tubing malleability while performing the swage, preventing cracks and leaks. SPIN tools Swaging tools allow you to connect tubes with ease and without the use of extra fittings; sleeves and unions, turning potential waste into actual profit. The S6000 Swaging tool set has the following bits to perfectly swage tubes with the O.D. of 1/4 in, 3/8 in, 1/2 in, 5/8 in, 3/4 in and 7/8 in.