Gps holder is designed to install in the umbrella mount on your clicgear cart and securely hold your gps unit while on the course because it mounts offset to the left side it can still be used with your standard clicgear umbrella holder or the clicgear umbrella angle adjust something which no other gps mounts for the clicgear can do fits all model 10 model 20 and model 30 carts comes with two complete sets of installation hardware for two seperate devices attachment profile is industry