Claw Quick Release Plate originally created by ULANZI allows you to release and set up between camera/smartphone/tripod/monopod/stabilizer/slider quickly instead of screwing. QR plate kit base Upgrade 1 : Arca interface. It is more convenient to connect the Arca tripod ballhead and stabilizer, and 1/4 screw hole on the bottom compatible with tripod, stabilizers, gimbal, monopod, slider, etc. QR plate kit base Upgrade 2 : More 1/4 screw holes are added at the bottom to provide more connection. Two screws can also be connected to the stabilizer, make your device more stable and no shaking. Secondary safety system Slide lock deliver ensurance and safety for your camera in case accidental fall off. Solid built by aluminum alloy, sturdy and durable; Maximum load 50kg, Secure and Safe; Rubber pad, anti-slip. Packet Include: Only base mount*1