These 2-3/4 in and 4 in drum brakes provide accurate tension control, light duty stopping, holding or continuous braking. Static torque capacity up to 1200 in-lb at 80 psi thermal horsepower rating up to 1/2 HP. Air actuated for accurate, economical operation. Long wearing friction linings. 2-Drums for each model, either with standard bore or no bore for customization. Mounts directly on shaft or on a self-centering mounting bracket. Order brake, drum separately. Nexen® Air Champ® Drum Brake, Air Actuated Open, 1200 in-lb Static Torque, 6.283 cu-in New/12.566 cu-in Worn Out Air Volume, 80 psi Maximum, 32 to 150 °F, Black Oxide, 5.23 in L Dimensions