1Universal Compatibility: Compatible with 501HDV 701HDV 503HDV 577, ensuring easy and secure mounting of cameras and camcorders. 2Efficient Use: Fast and easy quick lock knob for smooth and hassle free attachment and detachment of your camera, time and effort saving. 3Durable Construction: Made of high strength aluminum alloy and silicone materials, the camera quick release plate can provide a sturdy and reliable platform for your camera. 4Easy Installation: Including two pieces 1/4 inch and one 3/8 inch screws, the quick release plate offers flexibility in mounting different cameras and camcorders. 5Standard Slot: Approx. 38mm slot size that fits perfectly with most cameras, can ensure seamless integration and easy use, enhancing a secure and reliable using experience. 1 x Quick Release Plate