Ridgid 50575 500B Style Bolt Threader Dies, RH HS, M16-1.5in mm Series B Metric [New]

Model Number: 50575. Type and Compatibility: Bolt Threading Dies for 500B 531 541 Heads. Alloy Type and RH/LH Designation: RH High-Speed. Thread Size and TPI: M16-1.5. Thread Type: Series B Metric. Ridgid 50575 Bolt Threading Dies for 500B 531 541 Heads, RH High-Speed, M16-1.5 in. mm Series B Metric. Ridgid. The Ridge Tool Company. 50575.