SmallRig 2917 Overview The formfitting Light Camera Cage from SmallRig protects and offers accessory mounting for your Sony a7R IV or a9 II camera. The durable aluminum cage maintains open access to the camera?s controls and features a variety of mounting options. It features multiple 1/4?-20 threads and ARRI-style 3/8?-16 anti-twist mounts for attaching accessories. There are multiple 1/4?-20 and 3/8?-16 tripod mounting threads on the bottom to add an optional quick release plate or mount onto a tripod. The camera mounts onto the cage using a 1/4?-20 screw, as well as an M2.5 screw on the side to prevent twisting, and rubber padding on the base also helps prevent twisting and scratching. An integrated strap slot allows you to add an optional wrist or shoulder strap. A screwdriver is included to secure the screws, and it stores in the base of the cage. Camera Compatibility Sony a7R IV and a9 II cameras Accessory Compatibility Compatible with but not limited to: SmallRig Top Handle 1984 SmallRig Wooden Side Handle 2093 SmallRig Cable Clamp 3104 SmallRig ARRI Locating Handle 2165 SmallRig Ball Head Magic Arm 2115