MGM Brakes, as a supplier to domestic and global truck, trailer, bus and specialty vehicle manufacturers, offers over 20 different models of spring brakes, including both double-diaphragm and piston style models. Numerous service chambers are also offered. Standard and 3-inch "Long-Stroke" designs are available for most models of spring brakes. Our new, patented Electronic Stroke Alert (e-STROKE®) system is also offering the industry a simple, accurate method for conducting instant brake stroke status checks on heavy-duty air-braked vehicles.