Hit the ground spinning with a NEW Diamond Core Drill Bit. These heavy-duty drill bits are suitable for penetrating super tough materials, including Concrete, Cellular Concrete, Bricks, Tiles, Stoneware and various other Masonry and Concrete surfaces. They’re built with commercial-grade steel to last the long haul, and their diamond cutting teeth will chew through incredibly solid surfaces with great ease and precision. Commercial-Grade Steel Diamond Cutting Teeth Suitable to Drill into: Concrete, Cellular Concrete, Bricks, Tiles, Stoneware and various other Masonry and Concrete surfaces. SPECIFICATIONS Cutting Diameters: 63mm, 76mm,112mm Lengths: All diamond core drill bits are 450mm in length Shaft Material: Commercial Grade Steel Type: Hole Cutter Featured Refinements: Hole Saw Cutting.