Parts List: 2 x Nuts 3 x Long Collet 3 x Short Collet Highlight description: Trimmer Collet Adapter and Nut Set: You will receive 6pcs adapter collets and 2pcs nuts, there are 3 different sizes of engraving machine collets, 8mm, 6.35mm, 6mm, to meet your various needs in daily work Carbon Steel Material: The router chuck collet is made of carbon steel, which has excellent endurance and flexibility, practical, wear-resistant, and super-long service life High Precision: The router chuck chuck has high precision clamping force and good grip stability, which can tightly and stably clamp the router bit and complete the work efficiently Multifunction: Split bushing adaptor for multiple uses of the chuck or collet. High precision woodworking router chucks can be used in conjunction with engraving machines Wide Application: Collet chuck adapter is suitable for carving machine, wood planer, trimming and engraving machine; wood cutter; router and wood milling and engraving head, etc Detailed description: Description The High Precision Router Collet Chuck holds a variety of router bits tightly and stably, increasing your work efficiency. Made of carbon steel, the router chuck is practical, wear-resistant and long-lasting, making it ideal for use with carving machines, milling cutters and more. Key Features Sturdy and Enduring: Router collet chuck is made of carbon steel, enduring and wear-resistant, stable performance. 3 Different Sizes: The collet can be converted to 6mm, 6.35mm and 8mm. Meet the different requirements for use in various occasions. Specification Product name: Router Collet Adapter Material: Carbon Steel Color: Silver+Black Size: 6mm, 6.35mm(1/4), 8mm Size: 11 x 7mm, 11 x 8.4mm (as shown) Used for collet conversion of trimming machine and engraving machine. Only for engraving machine, wood engraving machine, collet chuck adapter. Notes: 1.There may be slight differences between the picture and the actual color of the commodity. We will try our best to show you the exact color. 2.Please allow slight dimension difference due to manual measurement. High Precision: The router chuck chuck has high precision clamping force and good Trimmer Collet Adapter and Nut Set: You will receive 6pcs adapter collets and 2pcs nuts, there are 3 different sizes of engraving machine collets, 8mm, 6.35mm, 6mm, to meet your various needs in daily work Carbon Steel Material: The router chuck collet is made of carbon steel, which has excellent endurance and flexibility, practical, wear-resistant, and super-long service life grip stability, which can tightly and stably clamp the router bit and complete the work efficiently Multifunction: Split bushing adaptor for multiple uses of the chuck or collet. High precision woodworking router chucks can be used in conjunction with engraving machines