1Applicable Model: The camera quick release baseplate is applicable for A7C2 A7CII A7CR camera, the battery can be replaced more conveniently without removing the battery plate 2Enhanced Expansion: With 1/4in 3/8in holes on the bottom that are compatible with most hles, tripods, allows quick installation swift switching between horizontal vertical shooting 3Convenient Battery Replacement: The base has a slot for the original battery cover, making it easier to replace the battery without disassembling the baseplate 4Silicone Protective Pad: A silicone protective pad on the base effectively protects the bottom of your camera, boosts friction, prevents scratches, also contains 2 safety stop screws to prevent the camera from accidentally falling off 5Aluminium Alloy Material: Made of high strength aluminium alloy material, the anodized frame of this cage is more wear resistant corrosion resistant, soft with smooth edges