Need a cable for my PW but....

[Eighth Avenue]

... have no idea what it's called

I want to acivate my 5d1 when I press the trigger on my 5d2. I know I can stick a tt5 on each and use a cable to connect the tt5 to the 5d1 to trigger it but have no idea what it's called.

Anyone know?

Thanks in advance

 

[Phil V]

It's this one. I believe there are clones from eBay or amazon.

 

[Eighth Avenue]

Thanks Phil