Equip your semi truck to be Ready for the Road Ahead , with the HD Value 12" 7K Hub and 8" x 6.5" Drum Assembly, a key piece that improves the performance of the brake system. Due to its combination of a wheel hub and brake drum into one assembly, this replacement set is able to enhance braking alignment while also reducing installation time. Engineered with advanced materials to deliver long-term reliability. FleetPride is your First Click in Heavy Duty .