Locks may break over time on dispensers, which can often be costly to replace. Fortunately Bobrick supplies the Bobrick Paper Towel Lock And Key Set (3944-30) so that only the lock needs to go and not the entire dispenser itself. This kit contains the locking cam mechanism as well as the matching key that goes with it. The Bobrick - 3944-30 - Paper Towel Lock And Key Set fits Bobrick dispenser models B-3942, B-3944, B-3947 and B-3949 and is easily installed on the spot with minimal tools and tim...