Note: The color is according to the first picture,the quantity and size are according to the title,if the title is not clearly written,according to the description.Our products Features:1. Made of high-quality metal material,not easy to rust and break,long-term use,strong and durable.2. High precision and stable performance. Extend your router bits to provide full depth of cut for 1/4" shank router bits.3. The collet provides the extra depth of cut required for many milling tasks. Easy to use,better control,it will increase your productivity.4. Wide Range of Applications: It allows you to process products more efficiently,suitable for woodworking trimming,milling,drilling,engraving machine and other processing.5. If you have any questions,please in time. We will provide you with better products and services.Notice:1.Actual color may be slightly different from the image due to different monitor and light effect2.Please allow 1-3cm deviation due to manual measurementDescription: Material: spring steelSize: As shownincludes:1 set x Extension Chuck Rod