SmallRig Rotatable Horizontal-to-Vertical Mount Plate Kit for SonyAlpha 1 / Alpha 7 / Alpha 9 / FX Series4244is designed to quickly switch between horizontal and vertical shooting without adjusting the lens optical axis. It maintains full access to LCD flip screen and ports and features built-in pads that prevent scratches and twist. The Arca-Swiss quick release plate locks or releases camera or cage within seconds and fits DJI RS-series gimbals. Compatible with Arca-type / Manfrotto RC2 tripod and DJI RS-series gimbals, the lens collar mount plate can rotate by 90 degrees by merely unlocking a knob to switch between horizontal and vertical shooting; its bottom 1/4"-20 and 3/8"-16 threaded holes also support other quick-release plates. Besides, there is a magnetic dual-head wrench in the baseplate for easy installation and release. 1. Quickly switches between horizontal and vertical modes without adjusting the lens optical axis;2. Modular design, quick-release lens collar support for convenient storage and portability;3. Gives full access to buttons and ports (LCD flip screen, battery door, card slot);4. Supports camera with or without a cage;5. Supports Arca-Swiss / Manfrotto RC2 tripod;6. 1/4"-20 threaded holes , 3/8"-16 threaded hole for handle, magic arm, plate, etc.Note: Please remove the camera lens before installation.Compatible with cage in Kit 4198 / 3668 / 3668B / 3669 / 3669B / 3708 / 3710 / 4139 / 4184; incompatible with HDMI cable clamp or side handle in vertical shooting.Compatibility:Camera:Sony Alpha 7 III / Alpha 7 IV / Alpha 7R III / Alpha 7R IV / Alpha 7R V / Alpha 7S III / Alpha 1 / Alpha 9 II / FX3 / FX30Cage:2087D / 3667 / 3667B / 3639 / 4308 / 4138 / 4183