MIL040211 Features: -Miller Spot Weld Tips are made of Durable Class 2, long-wearing copper alloy.. -MILLER. -One set of tips is supplied with each set of tongs. Maximum welding capabilities are obtained with minimum tong length. Tong measurements listed are from tip to transformer. Tips are made of RWMA Class 2 alloy.. -UNSPC CODE: 23271400.