Gopro 3-Way Grip Arm Tripod Mount Extention, AFAEM-001 – Design Info
Amazon.co.jp: Compatible with GoPro Accessories Parts, Waterproof, 3-Way Tripod, 3-Way Hero 11/10/9/8/7/6/5/4, Black Session Max, DJI osmo Action and Other Action Cameras, Hand Grip Stand : Electronics