Contour compatible action helmet mount

Mount to glue on your skate style helmet or other double concave surface. The shape on the attaching surface is measured from my skate helmet. The rails are measured with a caliper from a camera and have a slight play for printing with a typical desktop printer without any work after pinting but to glue it on the helmet. Print upright (rails vertical).

NOT FOR "RACING" ON THE STREETS WITH YOUR WANKER MOTORCYCLE :D

Happy trails or what ever!