1. Brand new and high quality.
2. This high-quality quick release plate can be used as a replacement for Manfrotto 577 compatible for Manfrotto tripod.
3. Comes with one 1/4 inch and one 3/8 inch screw for your camera or camcorder mounting.
4. With two 1/4 inch and one 3/8 inch screw holes at bottom for ball head tripod or camera dolly mounting.
5. The base features horizontal & vertical three shooting gradienters for better calibration.
6. The quick release sliding plate is compatible with for Manfrotto 501PL and 501PL (long).
7. Features solid locking screw safety pin & anti-skid pads on the plate providing you quite reliable mounting of your camera.
8. Made of aluminium alloy very durable.