ITEM NAME:P200 Quick Release QR Clamp Base Plate for Manfrotto 500 AH 701 503 HDV 577 Description: This quick release assembly is composed of a quick release clamp adapter and a quick release plate, also equipped with 1/4" and 3/8" screws & thread holes for DSLR, tripod or stabilizer, etc. Fully compatible for Manfrotto 501, 500AH, 701HDV, 577, etc. Fast switching between different devices without replacing the quick release assembly. Standard 1/4"-20 mounting screws for camera attachments, the rubber pad base to prevent scratches and reduce camera movement. Aluminum alloy made, anodized surface treatment, durable, corrosion and wear resistance, perfect for shooting outside or photography. Specification: Material: Aluminum Alloy Size: Approx. 9×10.5 cm/3.54×4.13 inch Package Includes: 1 Piece Quick Release Assembly Note: Please allow a slightly errors due to manual measurement. Due to the difference between different monitors,the picture may not reflect the actual color of the item. Thanks for your understanding and attention, wish you a pleasant shopping experience!.Fully compatible for Manfrotto 501, 500AH, 701HDV, 577, etc. This quick release assembly is composed of a quick release clamp adapter and a quick release plate, also equipped with 1/4" and 3/8" screws & thread holes for DSLR, tripod or stabilizer, etc.