I'm getting another one. Dewalt says 90 days full refund warranty. I was removing a motor from a Haier combo washer dryer. When I backed the screw out, the back sheet metal caught under the collet and popped it off. I found all the parts and put it back together but now the bits won't lock in place. I checked the parts diagram and all the parts are there. I thought the check ball was gone but it's still there. It's under warranty, I'll just get a new one.