OFF-CAMERA AF TTL SHOE CORD FOR CANON 600EX RT, 430EX III-RT, 580EXII, 430EXII, 320EX, 270EX, 220EX SPEEDLITE FLASH REPLACES CANON OC-E3 Camera Shoe Cord. AVOIDS RAY EYE & HERSH SHADOWS - CREATES DRAMATIC EFFECTS FEATURES A BUILT-IN TRIPOD SOCKET. ESSENTIAL FOR PHOTOGRAPHER'S CAMERA BAG. One end slips into the hot shoe and the Speedlight attaches to the other end (on a bracket when the Speedlight is used off the camera)