... the drum brakes have a compensation device and brake cylinder. The drum brake is used for automobile crane QY12T, QY16T, QY20T, QY25T, ... QY30T, QY50T and QY75T, etc., big tonnage cargo truck, pavers, ... are more than 20 kinds of products for you to choose. SOMA Brand Brake(T), for wheel loader, back hoeloader, roller, trailer, ...