For Sony A7C II/A7CR: SmallRig Baseplate 4439 is designed for Sony Alpha 7C II/Alpha 7CR to improve the grip of the camera, quickly switch between tripod, stabilizer and handheld shooting, while protecting the bottom of the camera. | Quick-Release Plate for Arca: The quick-release plate for Arca on the bottom is designed for DJI RS 2/RSC 2/RS 3/RS 3 Pro, compatible with RS 2/RSC 2 original quick-release plate and SmallRig Quick-Release Plate for Arca 3154, allowing your camera to be easily used with a stabilizer. | Multiple Expansion Interfaces: The QD hole at the bottom is compatible with QD shoulder strap, and the wrist strap hole is compatible with SmallRig Wrist Strap 3848. In addition, there are built-in 1/4"-20 and 3/8"-16 threaded holes to meet your more expansion needs. | Hinge Arm Design: The hinge arm is designed next to the battery compartment, which enables you to replace the battery smoothly without blocking the battery door, enhance the grip of the fuselage and fit the curve of the fuselage better, giving your little finger a place to rest. | Anti-Scratch: The base plate is connected to the bottom of the camera through 1/4”-20 screws. The built-in protective gasket and edge protrusions can prevent the camera from being scratched and deflected. A built-in magnetic wrench at the bottom makes it easy to disassemble and assemble, and can be used anytime. | Note: This product cannot be used with the SmallRig Horizontal-to-Vertical Mount Plate for Sony Alpha 7C II / Alpha 7CR - 4424