8Sinn Arri Rosette 28mm Mount Key Features: – 360-degree rotation – M6 center opening – 28mm diameter – Aluminum made   28mm Arri Rosette can be attached to any surface equipped with at least 2 X 1/4″ threaded mounting openings. Standard solution perfect for mounting additional Arri-related accessories. Dimensions: Length: 44mm Height: 8mm Width: 28mm Weight: 19g Set includes: 8Sinn Arri Rosette 28mm Mount