 "GoPro Roll Bar Mount" "Gopro Mount - Promo-Optique"
"la Roll Bar Mount de GoPro est un kit permettant de fixer vos cameras Gopro (Motorsports, Helmet et Surf hero) à un tube de 1.4" à 2.5" de diamètre ." 
 "GoPro Rollbar Camera Mount"@en Mount | Sportsman's Warehouse"@en
"GoPro Rollbar Camera Mount - Attach your GoPro camera to roll bars, tubes and more. Fits 1.4" to 2.5" diameter tubes. You can clamp your GoPro to bike frames, bumper bars, ski/surfboard racks, UTV cages, or anything else that is in the size range. "@en 