It helps position your camera securely on the tripod head. The quick release lock prevents the camera from falling and allows for easy attachment and removal. Suitable for digital cameras, 35mm cameras, medium format cameras, video cameras, binoculars, and scopes. Includes a 1/4 inch -20 threaded camera screw and video pin. The quick release plate attaches to the camera's base, enabling fast and simple mounting without the need to adjust the threaded mount repeatedly. Compatible with models: PH-368, PH368, 686, CX686, C-600, C600, D-600, D600, 870RM, VCT870RM. Bottom interface size: 6.8 x 6.2 cm. Color: Black. Material: ABS. Package includes: 1 x QB-6RL Quick Release Plate. Only the listed item is included; other accessories are not included. Note: Lighting and monitor settings may cause slight color variations between the image and the actual product. Measurement may vary by +/- 1-3 cm.