Product details:

2-1/4" Carbide Cutter, Quick ChangeFeaturesCuts stainless steel quickly and easily - Quick Change arbor allows you to change cutter heads with a simple push and a turn. - Flange stop prevents over-drilling - 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"