Ridgid 48920 500B Style Bolt Threader Dies, LH High-Speed 3/8"-16 UNC [New]

Model Number: 48920. Type and Compatibility: BOLT DIES FOR 500B 1/4-1 AND 531 AND 541 DIE HEADS. Alloy Type and RH/LH Designation: LH High-Speed. Thread Size and TPI: 3/8"-16. Thread Type: UNC. Ridgid 48920 500B Style Bolt Threader Dies, Left Hand High-Speed 3/8"-16 UNC. Ridgid. The Ridge Tool Company. 48920.