This item is not manufacture by Manfrotto. It is 3rd party manufacture to compatible with Manfrotto. This 323 RC2 System Quick Release Adapter with 200PL-14 Plate adds a compact quick release system to any head that does not include one yet.
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INNOREL F10/F20 Mini Tripod Fluid Head Metal Camera Video Tripod Head with Arca Swiss Quick Release Plate for Video DSLR Cameras
Aliexpress UK
Enhance your photography setup with the 200mm Slide Rail Quick Release Plate Clamp. Precision-engineered through CNC machining and featuring an anodized surface, this clamp offers versatility with its 200mm length and bidirectional slots for easy camera adjustments. The multiple 1/4-inch threaded holes allow for flexible attachment to tripods or additional equipment. Lightweight at 180g, this black aluminum alloy clamp ensures compatibility with various quick release plates and is perfect for DSLR tripods and gimbals. Upgrade your gear for precise camera movements and capture the perfect shot in any scenario.
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FALCAM F22&F38& F50 2823A Quick Release Camera Cage/3298 Baseplate V2 For Sony FX3 / FX30 DSLR Camera
Aliexpress UK
ARCA SWISS TYPE QR PLATE：It integrated with Arca dovetail that will be very convenient to attach the Arca-type tripods, easily and quick release.
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K&F Concept Camera Tripod Quick Release Mounting Plate Aluminium KF-28 Series for Tripods Ball Heads Universal DSLR Camera Mount
Aliexpress UK
Compatible for Arca Swiss standard quick release plate clamp. 1 Quick Release Plate. With a 3/8" thread in the middle. Item Weight: 81g / 2.9oz.
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COMAN Light Lightweight Carbon Fiber Tripod For DSLR Camera With Quick Release Plate Overhead Photography For Dslr Camera Nikon
Aliexpress UK
There are 3/8" holes on the bottom for attaching devices such as 1/4" to 3/8" nuts. Weight: 0.30lb, size: 2.55in 3.14in 1.29in. Size: As the Picture.
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SmallRig Camera Clip with Quick Release Mount Plate Kit Vertical Load 40kg for Arca-type Tripod for Cameras Mount on Backpacks
Aliexpress UK
This Quick Release L Plate for all Benro Ballhead. 1 x Quick Release L Plate with 1/4" Screw. Width: 39mm (universal width of Arca-Swiss Standard QR plates). Suitable for most ball heads. Compatible With : All Arca-Swiss standard quick release plates, including Benro / Arca Swiss / Markins / RRS / Kirk / Wimberley / SUNWAYFOTO and etc.
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BEXIN Double Lock Mounting Plate Camera Clamp Quick Release Plate Clamp Adjustable Knob Adapter For Arca Swiss Tripod Ball Head
Aliexpress UK
Fullcompatiby with Manfrotto 200-PL14. Plate size: 1.97in 1.57in 0.39in /5cmx4cmx1cm（L W H）.
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Manfrotto plate 501-L90A Digital Camera Sliding Quick Release Plate For Manfrotto Tripod head 501HDV 503HDV 701HDV MH055M0-Q5
Aliexpress UK
Compatible with for Arca Swiss quick release plate, such as for RRS / for ARCA SWISS / for KIRK / for Wimberley / for MARKINS / for SUNWAYFOTO / for BENRO / for SIRUI, etc. Clamp Standard: for Arca swiss.
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Ulanzi Falcam F38 Multi-Hole Arca Swiss Quick Release Plate Universal DSLR Camera Gimbal Quick Switch Base 1/4'' 3/8'' Screw
Aliexpress UK