OEO1140: Features: -The Dremel MultiPro chuck allows you to quickly and easily change accessories on your Dremel MultiPro rotary tools without changing collets-Will accept accessories with 1/32" to 1/8" shanks-Tools compatible with these attachments Single Speed MultiPro Rotary Tool #275 (2561-4231), Two speed MultiPro Rotary Tool Kit #2850-01, Variable Speed MultiPro Rotary Tool #395 (2615-3726), Digital Rotary Tool Kit #3981 (2561-4405), and 9.6-Cordless MultiPro Rotary Tool Kit #7800-01-Carded.