Yongnuo Canon off Camera TTL Sync Cords OC E3B OCE3 B OC E3M OCE3 M 3M oc e3 | Yongnuo Store
Canon OC-E3 Off-Camera Shoe Cord mint condition | eBay
Foleto E-ttl Flash Off Camera Cord Cable Hot Shoe Mount For Canon 5d 7d 5diii 6d 600ex 430ex 580ex Ii 380ex Oc-e3 3m Speedlite - Shutter Release - AliExpress
Best Buy: Canon OC-E3 Off-Camera Flash Shoe Cord 1950B001-30917-Kit