37156 Model Code: AA (part# 37156) Hole Saw Arbor w/Pilot Drill This item features: -The best arbor in the industry ensures a solid connection without any gaps or wobbling. -Pilot drills have unique split point tip design. -Can be used with Greenlee #901, #902 and #904 bit extensions. -Price is for 1 Each. Model Code Model Description AAChuck Size:1/2 in, Shank Diam:7/16 in, Shank Type:Hex, Type:Arbor, Used With:1-1/4 - 6 in. Hole Saws and all Greenlee Recessed Light Hole Saws ABChuck Size:1/4 in, Shank Diam:1/4 in, Shank Type:Round w/3 Flats, Type:Arbor, Used With:9/16 - 1-3/16 in. Hole Saws ACChuck Size:3/8 in, Shank Diam:5/16 in, Shank Type:Hex, Used With:9/16 - 1-3/16 in. Hole Saws