Hole Saw Arbor, 7 16 in Hex, 7 16 in Arbor dia, 5 8 in 18 Thread, Standard Pilot Pinned Arbor no checkout Attaches accessories quickly without tools Use Attaches accessories quickly without tools Use only with chain of equal or lower working load limit Durable construction with brass plated joints and brass end caps which prevent the ends from splitting Marked on both sides for versatile use Embossed numbers and graduations prevent print corrosion 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