This listing is for 1 (one). Trailer Brake assembly fits Dexter axles 10k with electric brake on the left hand (drivers side). This unit has a diameter of 12.25'' by 4'' wide. It uses 7 bolts to secure to the axle. We also stock wheel seals, premium Koyo (made in Japan) bearings, plastic oil caps, brake drums and much more.
Thank you for checking us out! We look forward to serving you! The Right hand side assembly is listing number 275470444584.