Ridgid 500B 5/16 Inch UNC LH Left Hand Bolt Threading Dies for 500B Heads, 18TPI [New]

OEM, Genuine Ridgid Dies. Quantity: 1 Set of 4 Units. Size: 5/16" UNC Left Hand. Threads Per Inch: 18. Fits: 500B 1/4 to 1 Inch Die Heads. Ridgid 500B 5/16 Inch UNC LH Left Hand Bolt Threading Dies for 500B Threader Heads, 18 TPI. Ridgid. The Ridge Tool Company. 500B 5/16 Inch UNC LH.