Description
– 10 Sizes (Diameter): 4mm(4/25″), 6mm(1/4″), 8mm(5/16″), 10mm(3/8″), 12mm(1/2″), 15mm(3/5″), 16mm(5/8″), 18mm(11/16″), 20mm(3/4″), 22mm(7/8″), 30mm(1-1/5″)
– 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