Manual Threading Pipe and Bolt Die Head Complete w Dies, 1 in 11 1 2 NPT, 12 R, Alloy RH no checkout Constructed with a solid steel Constructed with a solid steel core for maximum strength Heat treated for maximum strength and finished to resist rust Dual molded grip provides increased comfort and slip resistance for safety Available in Standard Hex (6 in and 9 in shaft lengths) Compatible across the range of hole saws Various shank sizes 3 8 inch or 1 2 in drills Short pilot drills and arbors require a 3 1 16 inch pilot bit Long pilot drills and arbors have a pass through shank Hex arbors with non slit jaw slots are positive drive All die heads complete come with selected dies and are set at the factory Precision threading