S.C.V. Photography Ideas: Manfrotto M577 Arca Compatible Conversion Set from Hejnar PHOTO
85mm Quick Release Plate Adapter Clamp with 3/8 Screw Hole for Quick Release Plate Tripod Head of ARCA-SWISS Gitzo Manfrotto - AliExpress
Amazon.com : UTEBIT 50mm Arca Swiss Quick Release Plate Aluminum QR Clamp Adapter Set with 3/8"&1/4" Screw Hole and Built-in Bubble Level Compatible with Manfrotto DSLR Camera Tripod Ball Head Monopod :