ITEM NAME:4 pcs diamond rod 6 mm Coating Grinding Burrs Bits 6 / 8 / 10 / 10 mm N1U7 4 pcs diamond rod 6 mm Coating Grinding Burrs Bits 6 / 8 / 10 / 10 mm N1U7 with head-resistant coating of perfect diamond particles for carving, Etching, grinding, sanding, etc. Perfect for glass, metal, stone, tiles, ceramics and other Jewelers Perfect for hobbies, crafts, modelers and other professionals Total length: about 60 mm / 2.36 inches Diameter of the stem: approx. 6 mm / 0.24 inch Burr Head Length: about 20 mm / 0.79 inch Burr Head Diameter: 6/8/10 10 mm shape: needle tip Material: Tool steel Color: silver Note: It is suitable for cooling water when using it, keep motionless to install, and can not use it too much force package includes: 4 x 6 mm diameter grinding heads Only the above package content, other products are not included. Note: Light shooting 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.