Femitu Adjustable Hole Saw Circle Drill Bit Hole Cutter Circle hole cutter has M2 alloy tool steel cutting blades and drill bit. Circle hole cutter easily cuts holes from 1" (30mm) to 5" (120mm). Maximum depth 1 3/16" (30mm). Will cut plywood, laminates, composite boards, gypsum board, plastic, rubber, & many other material Includes extra brad point drill bit for drilling in thin sheet materials, and allen wrench. Not for use on sheet or other metals.