Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Wood Carving Drill Bit Set: All size is 3mm/1/8inch. 5 drill diameter sizes of 3mm, 4mm, 5mm, 6mm, and 8mm, different size can satisfy your various using needs. Material: Engraving drill tool is made of strong high-speed steel, durable and sharp. The three-sided arc groove can quickly and automatically discharge the from the side holes. that you can the wood and quickly while leaving a smoother surface. Positioning Tool: As the most commonly used marking tool in woodcarving, high-speed steel is also used. It is suitable for polishing, embossing, and marking grooves. It is commonly used in wood carving, carving, and furniture texture carving. diameter: 3mm, blade diameter: 2.35mm, 3mm, length: 47mm. 3- Chuck: Quick change keyless chucks holds various accessories with 1/32inch to 1/8inch sizes compatible for all cordless and corded tools. One-piece structure design, alloy material, sturdy and durable, more than plastic models. The 3- chuck is -made, and the built-in spring is stable and durable. This keyless chuck provides a big improvement in precision, under high-speed rotation, it not only maintains stability also improves work efficiency. color:Silver Material:steel Package Contents: 5 x HSS Wood Carving Bits 1 x Positioning Tool 1 x Quick Change Keyless Collet 1 x Transparent Box Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.