The product is a set of cam bearings designed for Ford Smallblock V8 engines with displacements ranging from 255 to 351W. Made by Federal Mogul, these bearings are a quality option for maintaining the smooth operation of the engine. With the Federal Mogul brand known for reliability and durability, these cam bearings are a new old stock (NOS) item that offers peace of mind for any car enthusiast looking to replace or upgrade their engine components.