Diamond Core Drill Bit - 63mm x 450mm This heavy-duty drill bit is suitable for penetrating super tough materials, including Concrete, Poroton, Cellular Concrete, Ytong, Marble, Bricks, Tiles, Granite, Stoneware and various other Masonry and Concrete surfaces. It's built with commercial-grade steel to last the long haul, and its diamond cutting teeth will chew through incredibly solid surfaces with great ease and precision. Pickup​​/​​Delivery: 3-5 Business Days