Speed up your operation, safer to work with using a hex instead of knurled. 5/16” has a 5/8” hex and the 3/8” has a 3/4” hex on it. Made from heat-treated 4340 alloy.
Two models one for 5/16” threads and the other for 3/8” threads. Each one takes 45 minutes of machine time on a 5-axis Mazak CNC machine. Made with the same quality as an ABS Stainless Steel Ring Grinder.
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