6mm-75mm Diamond Core Drill Bit Hole Saw Marble Granite Tile for. Name:Diamond Core Hole Saw. Diameter:6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm 22mm 25mm 28mm 30mm 32mm 35mm 38mm 40mm 42mm 45mm 50mm 55mm 60mm 65mm 70mm 75mm. The cutter head is made of high-quality diamond powder plating, which provides high hardness, sharpness, and durability. The sharp cutter head reduces opening resistance, making it easier to remove chips and resulting in fast and neat cutting without burrs. The chip removal holes are designed for fast heat dissipation, preventing jamming and ensuring stable drilling without any vibration. Suitable for opening holes in stone, tile, marble, granite. This product is compatible with angle grinders and can also be used with electric drills and bench drills when the connecting rod is attached. All dimensions are measured by hand, there may be small deviations. Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. According to your Choose.