... MATERIAL:Steel case, steel black case, steel chrome plated case, steel gold plated case,brass polished case, all this can take with ... type: snap on, roll ringTUBE&SOCKET: steel with nickel plated, phosphor bronze ,SS and so on.MOVEMENT:Brass, stainless steelCONNECTION ... MATERIAL:Steel case, steel black case, steel chrome plated case, steel gold plated case,brass polished case, all this can take with ...