Ridgid 48690 500B Style Bolt Threader Dies, RH High-Speed 1/4"-28 UNF [New]

Model Number: 48690. Type and Compatibility: BOLT DIES FOR 500B 1/4-1 AND 531 AND 541 DIE HEADS. Alloy Type and RH/LH Designation: RH High-Speed. Thread Size and TPI: 1/4"-28. Thread Type: UNF. Ridgid 48690 500B Style Bolt Threader Dies, Right Hand High-Speed 1/4"-28 UNF. Ridgid. The Ridge Tool Company. 48690.