In double performing kind of hydraulic brakes, double or tandem grasp cylinder is applied which offers larger brake pressure which may be transferred in double course i.e. each wheels in bikes and every one of the wheels in autos. Double Performing Drum Kind Braking- In double acting hydraulic brake https://cashkdwnd.ktwiki.com/1685594/new_step_by_step_map_for_auto_brake_work