This wheel bearing and hub assembly is designed for use on the front left and right sides of a 1994-1999 Dodge Ram 2500. It has a brake pilot diameter of 121 mm and a flange diameter of 214 mm. The bolt pattern is 6.5 inches and it is made by AM Autoparts. This product is a replacement for the original wheel bearing and hub assembly and does not include wheel studs. It is compatible with several different brands and models of vehicles and can be used for steering and suspension purposes.