Kailh Choc switches are low profile, ideal for builds that focus on achieving a low height and for and keyboards you'd like to take with you on the go. All Choc switches actuate at a travel of 1.5mm and have a total travel of 3mm. Kailh Low Profile switches are only compatible with keycaps that are made for them. They are not compatible with other keycaps, for example those for MX switches.