The Factory produces type DRV2 600 & DRV2  450 to use various models of carriages, and compensates the erosion existing in brake liner directed on the wheels.

Engine factory has been endorsed to produce the new types of these devices, they are as the following:

DRV2 A 600 / DRV2 A 300 / DRV2 A 450, these types have a braking power reaches up to 8.5 tons