This Husky Towing right Trailer Brake Assembly fits 12, 000 pounds axle.• Diameter: 12-1/4 Inch• Width: 5 Inch• Brake System: Electric• Brake Type: Drum• Axle Weight Capacity: 12000 Pound• Position: Right• Includes Backing Plate: Yes• Includes Brake Shoes: Yes• Includes Magnets: Yes• Includes Actuating Lever: Yes• Includes Adjusting Screw: Yes• Includes Spring Hardware: Yes Tapered Edge & Circular Grinding E-Coated Backing Plate Resists Wear & Corrosion Limited 1 Year Warranty | Husky Towing Self-Adjusting Electric Trailer Brake Assembly - 12.25x5" - 12,000lb - Right Hand