Greenlee 645-022 Hole Cutter Arbor, 2-3/8-Inch through 3-Inch, 1/2-Inch Shank;

Greenlee 645-022 Specifications:Quick Change Carbide-Tipped Arbor for sizes 2-3/8" through 3", 1/2" ShankGreenlee 645-022 Features:Cuts stainless steel quickly and easily. Quick Change arbor allows you to change cutter heads with a simple push and a turn. Use the same arbor for different size cutting heads. Removable cutter heads available in sizes from 5/8" through 3". Flange stop prevents over-drilling. Ejector Spring on all sizes above 3/4" makes removal of slug easier. Replaceable, cobalt-steel pilot drill with split-point tip to prevent walking. Precision carbide teeth for optimum performance and durability. Minimum chuck size of 3/8" (9.5 mm)