the reason i say this, is with very little effort on my part, i was just screwing in a screw (in a hard to reach place of all things) and the bit got stuck in the screw for a second, so when i pulled back the tool the bit fell out. you can check out our shopping page. you might want to think about any extras you may need. there are works that i have done that i hardly recall making. essentially the edge is replacing your typical dock on your screen, this provides you with more screen real estate. 