Description: 【High Quality Material】: Diamond Chamfer Finger Bit is made of high quality emery material, which has high strength, high hardness, durability, and long service life. 【Features】: Diamond chamfer has an extended thread interface, which is wear resistant, more convenient and durable, and has an extended hole opening function. The bevel can reduce chamfering pressure, facilitate bevel enlargement, and polish existing holes. 【Function】: Diamond Beveling Chamfer bit is suitable for multiple scenes, opening, enlarging, chamfering, polishing, etc. in marble, ceramic, etc. The extended threaded interface is more durable and stable. 【No need to add water】: Diamond Cone Milling Bit has built in cooling , so no need to add water, it can be used directly, making hole opening more convenient. 【Matching model】: Diamond Beveling Chamfer Milling Bit is often installed on a 100 type angle grinder or electric hand drill. Size Chart: Small:4.5cmx3.8cm/1.77inchx1.50inch Large:5.5cmx5cm/2.17inchx1.97inch Package Includes: 1 Piece Diamond Chamfer Finger Bit Note: Please allow slightly errors due to manual measurement and different monitors.