Size :500x500x25mm Load Capacity (Kg.):05 to 14 Natural Frequency (Hz):12-22 Thickness (mm):25 Coeff. of Friction:0.8 Shore A Hardness:90-92 Working Temp Range °C:-20 to +70 Weight ( Kg.):9.75 Material:Nitrile Rubber, Cork, Synthetic Fibre and Other High Gread Compounds. Colour:Green, Grey, Black https://www.vibrationmountsindia.com/insulation-plates/