Each anti vibration mount consists of two heavy duty , square , outer metal plates fully bonded to circular profiled rubber layers separated by interleaf metal plates.There are four drilled holes in each square outer plate for attachment to the unit being suspended and to the chassis . The AMC-MECANOCAUCHO® type SH anti vibration mounts provide high static and shock load capacities in compression with minimum deflection whilst also maintaining a low shear stiffness rate .