The GoPro Slim mounts are slimmed down to a basic GoPro adapter and base. Adjust your GoPro by rotating the aluminum adapter 360 degrees on a 1/4-20 threaded stud. Lock in place with the jamb nut using a 7/16" wrench. The strut base fits any size aircraft spreader bar, bi-plane strut, or wing strut from a J-3 to a Caravan. The simple clean design straps firmly to your wing strut without using bulky blocks or bolts. The FAA friendly base can be attached quickly and easily with the Rubber Strap Kit which uses a 19" universal rubber strap that fits most any strut. With adjustment holes every 1.25 inches, you simply start on a hole that gives you just enough strap to reach around the strut and tighten on the end. The temporary strap allows your camera mount to be quickly taken on and off any strut. It is recommended to use the GoPro safe metal case to eliminate the common problem of plastic cases and mounts breaking.