Size :500x500x80mm Load Capacity (Kg.):04 to 28 Natural Frequency (Hz):50-80 Thickness (mm):80 Coeff. of Friction:0.8 Working Temp Range °C:-20 to +70 Weight ( Kg.):28 Shore Hardness:80-82 Material: Nitrile Rubber, Cork, Synthetic Fibre and Other High Gread Compounds. Colour:Green, Grey, Black https://www.vibrationmountsindia.com/insulation-plates/