bimetal silver contactsface material: Ag,AgNi,AgCdO,AgSnO2,AgSnO2InO3,AgZnObase material: Cu,CuNihead dimension: 1.0mm-10.0mmsilver thickness: 0.15mm-solidshank dimension:0.6-4.0mmcontact type: rivet/buttonplating type: Ag,Aucertificate of SGSAll dimensions are fully according to customers requirements.For different security regulation requirements, all contacts need to be made by correct materials.We have abundant experience to offer service to consult, mutual research and joint-develop in technique.