1Made of high quality aluminum alloy material, CNC precision machining, hand polishing, surface anodic oxidation treatment, strong durability. 2Bottom plate has quick mounting opening, suitable for Sony A7R3/A9/A7M3 camera. 3According to camera appearance structure customization, after installation, not affect the opening of the bottom battery cabin door. 4Bottom with 1/4 inch screw hole for mounting to tripod or other equipment. 5Bottom plate thickness 18mm, can hold the camera in your hand and fit it perfectly.Condition: 100% Brand New Item Type: Base Quick Release Plate Material: Aluminium Alloy Color: As Pictures Shown Fitment: forSonyA7R3/A9/A7M3 Camera Weight: Approx. 160g Bottom Plate Thickness: Approx. 18mm/0.71inch1 x Base Quick Release Plate1 xWrench