Suitable for most drilling rigs in the market and a wider range of applications High-quality screw hole interface is more convenient for loading and unloading drills Precision steel pipematrix: thematrix has high hardness and is not easy to deform and has high wear resistance edge: thick diamond is wear-resistant and and not easy to be , and the ness is<br><br>Product name:water drill bit Precautions: 1. For rhinestones, water must be added during use. Fixed or hand-held drilling rigs are recommended. 2. To install the drill bit, first check whether the main shaft is swinging, whether the electrical and mechanical parts are normal, and ensure that the main shaft of the drill is tightened and kept concentric when the drill bit is installed. Colour:Silver Material:Carbon Steel Size:300mm<br><br>Package Contents: 1 * water drill bit<br><br>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.