This is the Detroit Locker for 9.5" Differential Toyota Landcruisers with 30 Spline Axles.
These Eaton Detroit Lockers are designed to maximize traction by delivering 100 percent of the torque and power to both drive wheels. Detroit Lockers offer full and positive traction for serious rock crawling. Detroit lockers work like a ratchet wrench, allowing one wheel to spin faster as needed for going around corners but does not allow either wheel to go slower than the drive speed. Totally automatic with no buttons to press. Solid reliability! Learn More