[Materials] The spherical diamond drill is made of high -quality diamond material and metal. It is more and cuts more sharply. [Details] Vajrayana coating edge burr set includes 13 sizes: 0.5mm-8mm (see Figure 2). The diameter of the handle is 2.35mm (3/32 inch) [Widely used] stone drilling set, suitable for stone, ceramics, glass, hard alloy, tiles, marble, jewelry, rocks, etc. in of grinding and carving [Application] This diamond burr is very recommended for crafts, hobbies, family repair, jewelry, gem use, shape, etc. [Easy to use] 2.35 mm handle is suitable for most rotating tools, including for . Note: When using this product, replace the chip to the correct size (2.4mm) Material: Metal colour: Silver Package Contents: 13 x F needle ball (0.5mm/0.8mm/1.0mm/1.2mm/1.5mm/1.8mm/2.0mm/2.5mm/3mm/4mm/5mm/6mm/8mm) 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.