MGM Brakes MJS3030ET051X Combination - S-Cam Brakes (Drum) Piston - Parking Brakes Breather Tube

Tamper Resistant Design Lighter Weight. 3 Inch (76.2 mm) Long Stroke Compact Size Patented Integral Release Bolt Mechanism -Minimal Bolt Protrusion- Approx. 1.25 inch (31.8 mm) Protrusion On "Long Stroke" Models When Manually Released Lower Hold Off Pressure (Less Air Consumption) Epoxy Coated Return Spring Non-Coil Clash Power Spring. Increased Corrosion Resistance -Steel Head, Epoxy Coated Available With 1,749 lb (793.3 kg) -2,450 lb (1,111.3 kg) of Push-Rod Braking Force @ 1.25 inch (31.8 mm) Stroke/Service Brake Sizes 17-36 Center Hole Shield.