16mm Anti Vandal Momentary Switch. They add a bit of flare to any hilt!
Wires can be fed through the screw terminals and tightened. Add a small dab of solder for an even stronger attachment or leave the wires as is for an easily removable switch. These work great for MHS saber parts with recessed switch holes or for use in boxes. These are identical to my stainless version in terms of size and fitment. Amazing quality.