Idler hub kit designed to use with Dexter 8K axles equipped with hydraulic disc brakes. This hub has 5/8" studs and works for EZ lube axles. This kit includes the hub (008-399-07), grease seal (010-036-00), inner bearing (25580), outer bearing (02475), EZ lube grease cap, and 8 flanged lug nuts. This hub bolts onto the Dexter rotor part # K71-631-00.