Dremel Multi Chuck 4486. The Dremel Multi Chuck allows you to quickly and easily change accessory bits on Dremel rotary tools without changing collets. It will accept all accessory bits with 0.4mm to 3.4mm shanks.
Diamond Drill Bits Set for Your Dremel Tool. Dremel Multi Chuck, and various sizes of small diamond core drills and solid ended diamond drill bits for drilling holes in sea glass, beach glass, beach pottery, china, glazed pottery, shell, bone, egg shell, stone, pebbles and gemstones.