The Really Right Stuff B90D plate is custom made to fit the Canon 90D camera body, utilizing carefully placed anti-rotation flanges around the plate. Cutouts enable easy usage of the 90D flip-out LCD screen.
Each individual plate is precisely CNC machined out of 6061-T6 aluminum billet. This enables the B90D to be reliably compatible with any Arca Swiss-style or standard 1.5"-dovetail-style quick-release system. It attaches to the Canon 90D tripod thread mount using a custom captive flathead1/4"-20 screw, included with the plate.
The B90D-L bolt-on vertical L-Component combines with the B90D base plate to create a fully modular L-Plate with two dovetail mounting surfaces. You can purchase the L-Component as a separate add-on or as included in the L-Set.