SmallRig 2999 (SR2999) Form-fitting Cage for Sony Alpha 7S III Camera Made of premium aircraft-grade aluminium alloy the SmallRig 2999 Sony a7S III cage is a solid piece of metal that is highly resistant to oxidation and stands the test of time. Featuring anti-twist design and rubber cushion on the base plate the cage will protect your camera very well. Precise Holes and Accurate Calibration SmallRig calibrates the thread holes at the unit of micrometre based on the data of a real camera. The cage enables users to flip the camera screen and give you full access to the battery door and all the buttons like hotshoes ports. Ergonomic design for Comfortable Grip Experience Ergonomic design is adopted to optimise the shape of the cage and improve grip. The cage is lightweight at only 220g. Anti-twist Design Secures Precisely Double locking and anti-twist design fix the camera onto the cage firmly. Built-in Allen Wrench With built-in magnetic suction design the Allen Wrench is ready to use without fear of loss. High Compatibility to fit all universal accessories of SmallRig. The cage is fully compatible with SmallRig universal accessory system with hundreds of accessories to choose from. Come and build your own kit!