Size :500x500x65mm Load Capacity (Kg.):05 to 20 Natural Frequency (Hz):6-12 Thickness (mm):65 Coeff. of Friction:0.8 Shore A Hardness:80-82 Working Temp Range °C:-20 to +70 Weight ( Kg.):24.3 Material: Nitrile Rubber, Cork, Synthetic Fibre and Other High Gread Compounds. Colour: Green, Grey, Black https://www.vibrationmountsindia.com/insulation-plates/