Comfort grip hand-piece - allows comfort and fingertip control
<br>Integrated shaft lock button - for easy accessory changes
<br>More flexible cable - new 5" bend radius provides more flexibility during use
<br>Quick connect -attaches to your rotary tool in seconds
<br>Accepts up to 1/8" shank accessories
<br>Works with collet system and the Dremel chuck
<br>For use with rotary tool models 4000, 400, 398, 395, 300, 285, 275, 200, 100, 8200, 800, 4200, 3000, 8220. Comfort grip hand piece makes the flex-shaft drill easy to work with.