CONCENTRIC Hydraulic Expanding clamping mandrel is used to turn a differential housing. The mandrel is a clamping device that can clamp rotationally-symmetric work pieces for grinding or cutting. Mandrels can be clamped quickly and accurately.The differential housing is a key component of a vehicle's drive train, housing differential gear assemblies and taking torques from those gears. It is made from ductile cast iron and is indispensable for all propulsion systems. Contact us for more details. recmandrels@gmail.com +91 9924323998