I was in the middle of servicing a Craftsman ratchet when the awful whoops happened. The ball bearing that holds the cap in place when changing direction popped out and slid well. Since it's a 2.5mm ball bearing, I doubt I'll ever find one, let alone a carpeted room. The solution was a new order. This set is very varied and should be useful for anyone who works with ball bearing tools. inevitably can/will fly as long as you maintain said instruments. Pretty basic product and would be nice to have a supply on hand if this ever happens again.