characteristic Cuts circles cleanly, quickly and accurately in ceramic tiles. The drill head is made of tungsten steel and hard alloy steel. High hardness and fast punching speed. The rotary head can be adjusted to cut the round hole of ceramic tile in the range of 20-94MM, and it is used for a ceramic tile puncher that can support multiple fixed hole saws. Compressible spring to absorb the vibration during punching. The compression length is compressed from 60MM to 42 mm. describe Name: ceramic tile hole opener Quantity: 1pc Color: blue+silver Material: metal+plastic Humanized design: ABS protective cover: the plastic protective cover rotates with the electric drill during drilling, effectively preventing dust and blocking debris. Package Contents: 1 x Ceramic tile hole opener Only 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.