The Makita P-83646 provides professional users with a fantastic solution to the large number of holes that have to be drilled in ceramic tiles, in modern bathrooms and kitchens. These particular holesaws are diamond coated aswell for efficient hole quality and longer life. Features: Electroplated diamond holesaws Set of 6 Diamond coated for longer life and excellent hole quality Must be used with the wet coolant feeder (Supplied) Applications: Ceramics, tiles, bathrooms, kitchens, glass Contains: 6, 8, 10,15, 20, 25mm diameter bits and 2 x Guide reservoir