Keyless quick-change drill chuck:
The keyless chuck lets you change the attachment of your Dremel rotary tool quickly and easily without changing the collets. It can improve efficiency and quality and help you save cost and time. This is ideal if the application requires multiple attachment changes.
Replacement 4485 Brass Collet Metal Nut Kit:
Why choose high quality brass collet and metal nuts? Most collets available on the market are made of aluminium. This material is soft and easy to wear, so we use a higher quality brass material. For plastic nuts, they break during use, and the all-metal material solves this quality problem very well. The included wrench helps tighten the metal nut.