ORIGINAL: Chronic

A locker, like the Detroit for 1:1 cars, locks the axle shafts together under power, but unlock when no power is sent to the diff. That unlocking allows for tighter turning when you aren't feeding it gas. When you're pulling the trigger it would lock the shafts, but when you released the trigger it would behave like an open diff. The "lockers" that are on the market lock the shafts all of the time like a spool would in a 1:1 car. The term "locker" is a little misleading to someone who is used to the terminology surrounding 1:1 vehicles as it's different than a locker for a real car, but it does lock the diff, so it fits the application I guess.....