Sharp cutting and impact resistance, not easy to rust, firm installation and not falling.It can realize high-precision and smooth cutting, reduce drilling speed and pressure, and increase the use of water lubrication will greatly extend the service life.Suitable for smooth surfaces, such as tiles, ceramics, glass (except tempered glass), marble, and terrazzo.It can greatly improve work efficiency and save your time and energy.Name: ceramic tile hole opener setColour:silverMaterial:MetalPackage Contents:1 x Ceramic tile hole opener setOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.