It is a quick rod clamp that fits on the 25mm handlebar of the Ronin-M 3-axis gimbal and is compatible with DJI Ronin-MX, Freefly MOVI or any other 25mm rod.
The bicycle handlebar mount holder with 1/4"-20 mounting screw is designed for mobile phone, flashlight, speaker, Gopro hero sessions, DJI Osmo camera and others.