Feature:1. Diamond core bits are dry core bits, which can perform perfect and clean drilling on tiles and other materials without water2. Hole saw kit is suitable for marble, granite, clinker tiles, roof ceramics, plastics materials, etc.3. The tile drill bit is suitable for all common angle grinders, so that should be an indispensable part of every tiler's toolbox4. The drill bit is manufactured with a special vacuum brazing process, come with a long service life5. This is a practical hand tool, drilling size contains 6, 8, 10, 20, 32, and 38mm, very versatileSpecification:Item Type: Hole Saw SetDrilling Size (metric system): Approx. 6mm / 0.2in8mm / 0.3in10mm / 0.4in20mm / 0.8in32mm / 1.3in38mm / 1.5inFastening Thread: M14Drilling Depth: Approx. 40mm / 1.6inDrill Bit Length: Approx. 60mm / 2.4inDiamond Height: Approx. 10mm / 0.4inColour: Black.Package List:6 x Drill Bit1 x Storage Box