Sold as a pack of 3, one large and two small actuators.
These actuators are designed to be used with thicker walled enclosures or mounting plates. With a 3.5mm wall they will be exactly flush
2 x 5.9mm diameter actuators
1 x 8.9m diameter actuator
The large actuator is T shaped to help with ribbon pinching on DNA200 mods. Please see dimensions above
Drill a 6mm hole for the small actuators and a 9mm hole for the large.