Hub-and-drum assembly for your trailer. For electric or hydraulic brakes. Fits 3.5K Dexter E-Z Lube and etrailer Easy Grease axles. Inner bearing (L68149) and race, outer bearing (L44649) and race, grease seal, grease cap, and lug nuts included. from most manufacturers, including Dexter, Lippert (LCI), and AL-KO Actual drum dimensions: 10" diameter x 2-1/2" wide Works with 10" brake assembly Bolt pattern: 5 on 4-1/2" Wheel