4 Diamond Coated Saw Blades For Cutting Glass, Ceramics & Stones This is a new set of 4 diamond coated saw blades. These are made by electroplating diamond particles onto piano wire. These diamond blades are the best quality available at prices well below the competition. They are great for cutting glass, ceramic and stones. You receive: One 60 grit (coarse) that measures approximately 5 3/8" (147 mm) long One 100 grit (medium coarse) that measures approximately 5 3/8" (147 mm) long One 120 grit (medium) that measures approximately 5 3/8" (147 mm) long One 140 grit (medium fine) that measures approximately 5 3/8" (147 mm) long