Amazon.com: Action Mount Sport Camera Adapter w/1" Ball for RAM Mounts - Universal Conversion Adapter | This Vertical Adapter Allows You to Use Sport Camera with Any RAM Style Mount. : Electronics
25mm to 15mm/17mm/25mm Composite Ball Adapter Dual Ball for Garmin- GPS Brackets | eBay
150mm Ball-Bowl Adapter - RigWheels
1" Ball Adaptor Motorcycle Kit - Universal Fit - Quad Lock® USA - Official Store