1. Designed for Sony Alpha 7 IV and Alpha 7S III
2. Compatible with SmallRig Camera Cages:3241, 3667, 2999, 3639, 3594
3. Allows the Sony FX30/FX3 XLR Handle to be attached on the camera cage
4. Does not block other mounting points beyond the top of the cage
5. Perfectly fits the cage with anti-twist design