The 6mm shank is compatible with rotary tools such as for , for , for , for , for , for , for , for , for , for and more. High precision: American and German made burr groove 6-axis CNC. Shape varieties: cylinder, ball cylinder, ball, ball tree. Great for cleaning holes, edges, welds, grooves and hard-to-reach areas. COMFORT: Reduce vibration and noise while working. Incredibly , and balanced, it cuts metal, wood, stone and plastic like butter. COMFORT: Reduce vibration and noise while working. color:Silver Material:Carbide Package Contents: 8 x for bits 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.