1、Compatible Differentials: The Posi Axle Locker is specifically designed to fit for Dana 44 differentials with 30 spline axles. This level of compatibility ensures a perfect fit and seamless integration into your vehicle's drivetrain. 2、Fitment: Replacement for Chevy K10 Suburban (1960?1994); Replacement for W250 (1960?2002); Replacement for Bronco (1971?1996); Replacement for K15 Suburban (1960?1980), etc. 3、Heat Treated and Precise Cut Teeth: The teeth of the locker undergo heat treatment, making them more resistant to wear and ensuring longevity, providing optimal performance. 4、Durable Materials: The locker is made from 9310 steel, a durable and strong material known for its excellent strength and wear resistance. This ensures that the locker can withstand the toughest conditions. 5、Easy, Drop in Installation: Installing the posi axle locker is a breeze, thanks to its drop in design. This means that you can quickly and easily upgrade your axle without complicated modifications.