VEVOR Trailer Hub Drum Kits 8 on 6.5" B.C. with 12" x 2" Electric Brakes, Self-Adjusting Trailer Brake Assembly for 7000 lbs Axle, 5-Hole Mounting, Backing Plates for Brake System Part Replacement

VEVOR Trailer Hub Drum Kits 8 on 6.5" B.C. with 12" x 2" Electric Brakes, Self-Adjusting Trailer Brake Assembly for 7000 lbs Axle, 5-Hole Mounting, Backing Plates for Brake System Part ReplacementSelf-Adjusting BrakeEasy InstallationLonger LifespanWide ApplicationSuperior PackagingChoices GaloreProduct Lifespan: ≥50,000 km,Brake Pad Lifespan: ≥30,000 km,Set Includes: Single Set (2 Brakes + 2 Brake Drums),Material: Grey Cast Iron + SPHC + Q235,Brake Pad Adjustability: Self-Adjusting Feature,Magnetic Force: ≥600N,Applicable Trailer Weight: 7000 lbs,Magnet Size: 12",Friction Coefficient: 0.48,Brake Size: 12" x 2",Product Size: Φ13.82" x 2.81" (Brake); Φ12.9" x 6.69" (Drum),Flange Stud Count: 5,Item Model Number: BF12-Z02AB*2,Product Weight: 96.47 lbs,Voltage/Current: DC12V/2.8-4.2A,Brake Pad Size: 1.97" x 0.19