Description:

SIZE - 6mm(1/4-inch) Drilling Diameter, 5.5mm(0.22-inch) Shank Diameter.. DIAMOND COATED - Diamond coating enhances the drilling speed, which makes the bit more sharp.. NICKEL PLATED SURFACE - Nickel plating surface can extend the service life and enhance the surface corrosion resistance.. SPECIAL DESIGN - Side open can remove the waste to keep the drill bit clean.. APPLICATIONS - Perfect for drilling glass, ceramics, porcelain, ceramic tile, porcelain tile, limestone, slate, marble, light stone and fiberglass. (Need to be used at a low speed; Always use lubrication (water) when processing, otherwise the hole saw will burn.).