ITEM NAME:2Pcs Alloy Collet Chuck Adapter For Trimming Engraving Machine Tool 6.35mm Description: High Precision Electric Router Milling Cutter Woodworking Collet Chuck Head. Adopted high quality steel material, good flexibility and wear resistance. Portable, high precision, tight and stable clamping, improve work efficiency. Chuck head size: 8mm/6.35mm/6mm (0.31inch/ 0.25inch/ 0.24inch). Suitable for engraving machine, wood router. perfect woodworking tool. Specification: Material: Hard Alloy Color: as picture shown Size: approx. 2 x 1cm/ 0.79 x 0.39inch Package Includes: 2 Pieces Chuck Head Note: The color may have different as the difference display, pls understand. Please allow 1-3mm error due to hand test. SKU: DMO0014264119446361.Perfect woodworking tool. 2 Pieces Chuck Head. Material: Hard Alloy. Adopted high quality steel material, good flexibility and wear resistance. The color may have different as the difference display, pls understand.