Size :500x500x15mm Load Capacity (Kg.):10 to 35 Natural Frequency (Hz):45-70 Thickness (mm):15 Coeff. of Friction:0.6 Shore A Hardness:80-85 Working Temp Range °C:-20 to +70 Weight ( Kg.):4.3 Material: Nitrile Rubber, Cork, Synthetic Fibre and Other High Gread Compounds. Colour:Green, Grey, Black https://www.vibrationmountsindia.com/insulation-plates/