The MILWAUKEE® One-Piece Carbide Hole Cutter Set - 8PC features carbide teeth for longer life and smooth cuts in stainless steel and other hard metals. A stop shoulder design prevents over-drilling and limits cuts to a 3/16" depth, while the 3-flat Secure Grip shank is optimized for use with drill/drivers. The spring-loaded pilot bit provides complete plug ejection for clean and efficient hole cutting. A solid one-piece design delivers added durability and dependability cut after cut. This carbide hole cutter kit includes 7/8", 1-1/8", 1-3/8", 1-3/4", 2", and 2-1/2" cutters, hex keys, and two additional pilot bits. The cutters deliver up to 10X life versus standard hole saws and are designed for use in stainless steel, mild steel, copper, aluminum, and other metal materials.