It’s your basic red action button! This is a very useful, small, panel-mount momentary switch. It is a SPST N.O. with ¼" threading. This button is perfect for basic On/Off functions. Overall length (including leads) is 26.3±1.3mm, it has small solder lugs for connection. These momentary buttons are rated up to 0.5A or 3A(depend on your selection).