Rubber Coated Magnet Mount with Arm Extensions for GoPro Sony Alphas and other cameras Mount your GoPro or other cameras (Sony alphas, Fujifilm, Canons, Nikkons) to any magnetic surface (rubber coated=NO SCRATCHES!) Compatible with all GoPro HERO models (and with other cameras with the extra piece we provide-see photos) 2.5" diameter x 0.5" thick with Aluminum alloy GoPro mount More than 40 pound pull force-Will hold GoPros and similar lightweight cameras at ~100mph speeds! Solid and adjustable mount for your steady perfect shots