Compatible devices Sony a7R V/ a7R IV/ a7 IV/ a7R III/ a7 III/ a7S III Camera Nitze T-S13A aluminum cage is compatible with Sony a7R V / a7 IV / a7R IV / a7R III / a7 III / a7S III camera. It protects your camera from blocking any camera operation buttons while providing many mounting points. The camera can be locked tightly by a 1/4" screw on the bottom and three M2 screws on the left side. Adjusting the locking positions of the left side screws can fit different cameras. The magnetic wrenches on the bottom are provided for easy use.