... : 10MM;sillver with goldplating2. operation: auto-reser and auto-lock;3.contact structure: single-throw (1NO+1NC)4. lampshare color: red ... stop switch, buzzer, accessory and so on; ON sale installation diemeter : 8mm,10mm,12mm,16mm,22mm,25mm; 10mm mini push button switch lighted momentary or on off