RainbowImaging 10 Meter / 33 FT TTL E-TTL Off-Camera Shoe Cord for Canon DSLR Flash 580EX II 550EX Canon 430EX II Canon 420EX 380EX
10 Meter / 33 FT TTL Off-Camera Shoe Cord  provides TTL and traditional mode for Canon Speedlites when used off-camera with Canon SLR/DSLR cameras, all automatic functions of the Canon cameras are retained.