[Warm Note]Quick change keyless chucks holds accessories with 1/32 inch to 1/8 inch sizes. Pay attention to measure the contrast size before buying. [Suitable For]3-jaw chuck compatible for cordless and corded rotary tools. Including drill bits, sanding drums, polishing wheels and other light-duty accessories. [Multiple Choice]There are eight sizes of brass 4485 collet to choose: 0.8mm, 1.7mm, 2.1mm, 2.4mm, 2.7mm, Please confirm the size you actually need before buying. [High Quality]These material is soft and easy to wear and tear, so we use a better quality brass material. for plastic nuts, they will break during use, and the all-metal material solves this quality problem very well. Material: Metal colour: silver Package Contents: 1 set x drill bit kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.