Size :500x500x2mm Load Capacity (Kg.):02 to 18 Natural Frequency (Hz):30-70 Thickness (mm):2 Coeff. of Friction:0.8 Shore A Hardness:40-45 Working Temp Range °C:-20 to +70 Weight ( Kg.):2 Material: Nitrile Rubber, Cork, Synthetic Fibre and Other High Gread Compounds. Colour:Green, Grey, Black https://www.vibrationmountsindia.com/insulation-plates/