3 Review(s)

Diamond coating maximizes performance and retains a sharper cutting edge.Nickel plating surface can extend the service life and enhance the corrosion resistance.Suitable for cutting accurate holes on glass, ceramics, porcelain, ceramic tile, porcelain tile etc.. Not suitable for drilling tempered glass, plastic and wood.Please use at low drill speeds and drill pressure. Always work with coolant (water) when drilling. Not suited for use on concrete or for depths beyond about 1/2 inchPackage Content: 2pcs x Glass Hole . Provide different sizes to satisfy your demands.