This cage is specifically designed for Sony A7 III, A7R III, and A9 cameras, fitting the camera body perfectly without interfering with its functions. Attachment method: Attach to the camera using the 1/4" screw on the bottom and the strap hole on the side. The screw can be tightened using the included wrench. Excellent features: Soft cushions are designed on the bottom to protect the camera from scratches. Made of lightweight aluminum alloy, it offers excellent strength and oxidation resistance, perfectly fitting the camera. Interfaces: Features 1/4" screw holes, Arri 3/8" screw holes, a cold shoe mount, and strap attachment points.