Compatible without screw lock PC sync port, eg: Seagull SC-2 SC-5 SC-6¡
3.5-PC
Introduction Professional spring PC sync cable, can be extended to 1M. It has a screw lock,so the cable can be locked with the pc socket of the camera. Cable Unstretched length: 0.3m(1ft) Cable Max stretched length: 1m(3.2ft)