Specification: straight grain three-claw head suit Model: blackened Product weight: 20g Package includes: M8 universal chuck * 1 (clamping range 0.3-3.2mm) Motor connecting shaft * 1 (according to the diameter of motor shaft, the diameter of shaft hole is 2mm/2.35mm/3mm/3.17mm/5mm) Hexagon wrench * 1 (for removing and fixing the motor and connecting shaft) Specifications: 1. Features: excellent workmanship, 0.3-3.2mm quick-release chuck. 2. Miniature brass chuck: solid and wear-resistant/accurate punching/durable/widely used. 3. Design of pure copper sandwich: it is made of pure copper material with high hardness after special heat treatment. 4. Scientific four-leaf spring design: the electric grinding chuck adopts scientific four-leaf spring design, which is firm and safe to use 5. The length is adjustable. Package Included: 1 * Motor collet set