[ Material]Our diamond grinder bit head is made of brass and diamond material, and adopts chromium plating and hardening dealing to improve the hardness and wear resistance of the grinding head. It can long-term and efficient use, and no need to replace it frequently, saving time and costs. [Standard Frosted Design]This stone grinder bit adopts standard frosted design. The brass core reduces the binding of the shaft, effectively preventing the grinding head from sticking to the grinder shaft. The is plated with diamond grit, and the joint is double-layered electroplated to that the diamond grit not peel off, maintaining high strength and long service life. [Quick and Efficient]The diamond grinder bit is well designed to complete grinding tasks quickly and efficiently, whether it is a simple repair job or a complex project. [High Standard Assurance]Each diamond grinder bit can quality control and testing, meeting high standards and providing you with professional quality assurance so that you can use it with confidence. [Scope of Application]Our ceramic abrasive head tool is suitable for the molding of hard materials such as ceramic tiles, glass, colored glass, stone, etc. It is compatible with various glass grinder and can meet your requirements for different materials and equipment need. Colour:As Shown Material:Metal Size: 3/4 Inch Package Contents: 4x diamond grinder bit 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.