Fits diameter 38,1 mm. Threaded holes (M4x12) for holder attachment.
For installation of devices on pipes and rods/bars, for example most types of vehicles; motorcycles, boats, carts, stands, wheelchairs, airplanes etc. The mount has threaded holes in a round multiple AMPS-pattern. The holes are for M4x12 screws. The mount fits pipes with diameter 38,1 mm (44,5 mm if insert removed).