Reed used its 100 years of die-making experience to select the best materials, methods, and CNC production for its Universal dies. These dies fit RIDGID? brand 300, 300 Compact, 535, 535 Automatic, 1215, 1822-I, 1224 plus the Reed R811 Universal Die Head (#05380). Choose from Reed?s full line of dies made from Alloy and High Speed Steels in geometries for NPT, NPSM and BSPT.