How to replace Frabill net

I am trying to replace the net on my Frabill power lock / power catch net. It looks like I need to use an Allen wrench to disassemble the yoke so I can slide the old net off and the new net on. The problem is I can't find the right size wrench. I've tried both metric and standard. Does anyone know the correct size? Thanks

They are 5/32".

Thanks. I found one that fits.