12'' 2.5mm Plug Jack for Trigger Camera Male Flash PC Sync Cord Cable Receiver - Walmart.com
Flash sync - Camera-wiki.org - The free camera encyclopedia
Amazon.co.jp: 3.5 mm to Male FLASH PC Sync Cable 30 cm 3.5 mm Plug – Male Flash Sync Cord Camera Photo For Connector 2 Pcs : Electronics
Amazon.com : Optical Flash Slave Trigger JJC Hot Shoe Sync Adapter with PC Socket,Optical Sensor & 1/4"-20 Threaded Socket Cold Shoe for All Flashes Speedlight with Standard ISO 518 Hot Shoe-1 Pack :
Tentacle to Flash Synchro Socket | Tentacle Sync Shop