The Benro QR6 Slide-In Video Quick Release Plate is a 3.62" long sliding quick release plate for the Benro S4 and 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 one 1/4"-20 camera tie-down screw, and features a spring-loaded locating pin.