- Joined
- Dec 25, 2011
- Messages
- 10,552
Normally, two screws like those going through the jaw indicate a 2-piece jaw. Although socket head screws are more common. If they are, you remove the screws and the portion of the jaw clear of the front of the chuck comes off. You just turn that around to switch between outside and inside (actually larger diameter versus smaller diameter but they always seem to be referred to the other way) work piece.