24.1mm diameter 15.5mm thick. These buttons will fit any press fit spinner that can accomodate 24.1mm buttons including our Monolithic, Monolith, Minilithic, Minilith as well as models from many other makers. They are designed by Dark EDC. Machined and finished here in the USA by Nick McEntee of Full Throttle Originals. These will be just a hair smaller diameter than our normal buttons due to the fact that all of the material available now from American suppliers is just a bit under 1"