[Essential]A 10 tungsten carbide burrs is a good choice. The different shapes allow wood carvers or metal routers to easily trim any shape. A GREAT COMPLEMENT TO TOOLS: Compatible with all major of tools. SHARP, DURABLE, BALANCED: The carbide burr set cuts through excess material like a hot knife through butter. It will not wear out after long time use. The shaft will not bend at high speeds. Great for detail work rather than material. Our measurements are: 3mm rod 6mm head. Material: This carbide burr set/ bit set is made of high-quality for long service life. (CHECK SIZE BEFORE BUYING) MULTI-: This burr kit includes everything you need for carving, engraving, polishing, removing sharp edges on wood, stone carving, metalworking, die grinders. The kit includes a selection of shapes to suit all types of cuts. [Processing Quality]Using this burr set, the target surface is after engraving and engraving, and high-precision molds can be processed. size: 9.6 x 6.5 x 1.0cm Material: Tungsten colour: As shown Package Contents: 10 x Tungsten steel rotation 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.