Multi swage tool for 9 sizes: 3/16'', 1/4'', 5/16'', 3/8'', 7/16'', 1/2'', 5/8'', 3/4'', and 7/8'' OD. Nominal sizes: 1/8'', 1/4'', 3/8'', 1/2'', 5/8'', and 3/4''. This item consists of three pieces that work with most common OD sizes to produce perfect solder cups.