Item:Dies 1. Replaces part number 47745, 47750 2. Dies:size: 1/2''--3/4'', 1''--2'', 2.1/2''--3'', 2.1/ Item: Dies1. These dies fit the following Universal Die Heads: 504A, 711, 713, 811A, 815A, 816, 817, 842.2.Made from Alloy Steel3.NPT Right hand threads4.Replaces part number 47745, 47750BSPT, NPT