12pcs Diamond Hole Saw Set 6mm - 35mm for Glass, Marble, Ceramic, Tile

- 12 Sizes (Diameter): 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 25mm, 30mm, 35mm. - Rustless & Durable. Made of high strength Carbon Steel with smooth nickel plating surface to extend the service life. - Quick, Sharp & Smooth Cut. - Coated with high quality Diamond sharp, high precision and smooth cut with no broken edges fast. - Suitable for drilling Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone. - Not for use on Concrete or for depths beyond about 1/2". - Attention: Please keep the speed in 800-1000 per minute, keep adding water to keep the drill cool.