The Vello TTL Flash Cord 3ft (OCS-C3) is a black 3ft cable designed for Canon SLR cameras with TTL hot shoes. It is compatible with Canon SLR cameras that use E-TTL and E-TTL 2 C002 settings. The cord connects the camera body to the flash unit via the hot shoe, allowing for convenient and reliable operation. Made by the trusted brand Vello and manufactured in China, this flash cord is a reliable accessory for photographers looking to enhance their lighting setups.