Description Hit the ground with the NEW diamond core drill bit. These heavy-duty drill bits are suitable do penetration of very hard materials, including concrete, cellular concrete, bricks, tiles, stoneware and various other masonry and concrete surfaces. They are constructed of commercial grade steel to last a long time, and their diamond cutting teeth chew through extremely solid surfaces with ease and precision. SPECIFICATION Cutting diameters: 76 mm Lengths: All diamond core drill bits have a length of 450mm Shaft Material: Stal Commercial Grade Type: Drill Bit do holes Featured Improvements: Hole Saw Cutting Teeth Material: Diamond and Steel Blend Length of cutting teeth: 10 mm Threaded connection: 22 mm relaxing and relaxing massage Stal commercial grade Diamond cutting teeth Suitable do drilling in: Concrete, cellular concrete, bricks, tiles, stoneware and various other masonry and concrete surfaces.