Benro Slide-In Video Quick Release Plate for S4/S6 (QR6) A superior quality QR plate specifically designed to insure a light weight but super high strength support for your camera. Made for S4/S6 fluid heads, it is also compatible with heads that use the RC5 (Rapid Connect) quick release system such as the Manfrotto 501 fluid head. The plate includes a 1/4"-20 mounting screw and features a spring-loaded locating pin. Ideal for location shooting or for studio use. Limited 3-Year Warranty (Extended to 5-Years with Online Registration).