Amazon.com : Quick Release Plate, Tripod Quick Release Plate Fit for Manfrotto 200pl-14 Rc2 Camera Tripod Head (Pack of 2) Black : Electronics
Manfrotto 577 quick release adapter
Amazon.com: Sequpr Camera Tripod Quick Release Plate Adapter with 1/4'' Screw, 200PL-14 323 Camera Mounting Adapter for Manfrotto, Universal Quick Release Plate System for Camera Gimbal, Black : Electronics