... , hole:2.0mm or 2.5mm4.Materials:Materials:Rubber Electrode Pad,Mould RubberParts, Rubber Products,Silicon Rubber ,Silicon ElectrodePads.Silicon Electrode Pad,Materials: different kinds of rubber, such asNBR,SBR,EPDM,SIL ... , etc.5.Colour and size: any colour and size.6.Logo & Printing ...