Glass hole, drill, Bohuazhuan marble ceramic tile hole drilling

About Product:], this series of open hole packer with 100% imported diamond powder, excellent plating process, the general open hole packer durable several times, surface by nickel plating processing, price higher than. The opening, neat, smooth, no broken edges, no chattering phenomenon. The incision, small resistance, easy chip removal, improve the drilling speed, hole and easy decoration. The diamond powder coating, thick, durable than ordinary glass drill 3-5 times. ], surface by nickel plating processing, suitable for vitrified tile, glass, ceramic tile, marble, artificial stone, ceramics and other hard and brittle materials of drilling operation.