5 Large Diamond Hole Saw Drill Bits Tile Glass Marble. This is a new set of 5 diamond coated hole saws. This is great for cutting glass, ceramics, tile, brick, plastics, wood, fiberglass, stone, rock carbide, gold, platinum, silver, metals or anything else that is hard. Longevity is assured as the diamond particles are electroplated onto the surface of the metal. Recommended for jewelers, lapidary, hobbies, crafts, modeling, home repair, etc. Can be used with a Dremel tool. You receive: One hole saw measures approximately 1/4" (6.5 mm) in diameter with a 1/8" (3 mm) shank. One hole saw measures approximately 5/16" (8 mm) in diameter with a 1/8" (3 mm) shank. One hole saw measures approximately 1/2" (13 mm) in diameter with a 1/4" (6.5 mm) shank. One hole saw measures approximately 3/4" (19 mm) in diameter with a 1/4" (6.5 mm) shank. One hole saw measures approximately 1" (25.5 mm) in diameter with a 1/4" (6.5 mm) shank.