Round metal dome 1.Good Click Feeling 2.Long Time Life 3. Mainly use in the membrane switches 4.Travel: 0.15mm-0.21mm Round metal dome: (tactile metal domes, or metal snap domes) are round shaped switch contacts that were designed for mounting on membrane circuitry. They are designed to be pushed past the flat plane by .005-.010" for optimal tactile feedback. The C-Series domes will not invert ...