Gimbal ARRI Rosette (30mm) attaches to gimbal crossbars with a 30mm diameter like the DJI Ronin and provides a threaded ARRI standard rosette for attaching handgrips. This is idea for handles with start/stop capabilities like their Wooden Camera Handgrip with Trigger Box and their Canon C300 Handgrip Relocator. 1/4-20 Threaded hole on the back for attaching a WC Magic Arm for holding an LCD screen or other accessories.