Steel Dragon Tools 97065 Model 811A Quick Opening Die Head for RIDGID 300 535 Pipe Threading Machine For use with Steel Dragon Tools Model 300 and 300 Compact Machines. Universal, self-oiling die head for right-hand threads. Quick-opening lever for easy setup. Fits RIDGID Model 300 300A, 500, 500A, 535, 535A, 800, 801, 802, 1822 Machines. Dies are not included