For Insta360 Ace Ace Pro Ace Pro 2 PC Cage Expansion Adapter Frame with Dual Cold Shoe Bases (Black) 1. Protective frame specially designed for Insta360 Ace Ace Pro Ace Pro 2 action camera. The material is high-quality PC plastic, which is strong and durable and can effectively protect the camera accessories from being bumped 2. Hollow design, the power button, unlock button, sound pickup port, and speaker are not blocked 3. Lightweight and portable, smooth frame design, easy to install and disassemble 4. The bottom has a movable base and a long screw, which can be connected to a sports camera movable base or a selfie stick. The camera can be used in various scenarios such as cycling, skiing, hiking, etc. 5. There is a cold shoe opening on the side and top of the frame to facilitate expansion and connection of fill lights, microphones, etc. 6. The frame does not block the screen, making it stress-free to take selfies when flipping the screen