The RAM marine grade aluminum mount with motorcycle brake/clutch adaptor base includes a 1" diameter ball and socket system. The base attaches to the left or right side of your handlebar brake/clutch clamp on the Honda Goldwing and other similar style motorcycles. To check your motorcycle"s compatibility with this mounting base measure the center to center hole dimensions of your brake/clutch clamp. The holes centers have a minimum width of .94” and a maximum of 1.58”. Manufactured in the USA and comes with RAM Lifetime Warranty.