2x M3x8mm OR 2x M3x10mm Screws Required! Cold Shoe Camera Thumb Grip for the Fujifilm X10/X20 Finepix Camera Series that substantially increases camera stability when shooting while also not obscuring any of the physical camera controls. Not compatible with the X30 as the X30 changed up the button locations. This mount is much sturdier than your average 3D printed camera thumbgrip. I have used 2 M3 Screws on the traditionally weak corner to give the grip lots of strength, and also angle matched the thumbgrip and the body so all the force is directly in contact with the camera. The camera setting dial as well as the small scroll dial are both still usable with this thumb grip.