What ferrules do I need on an RR5?

[thebigz]

I am going to remove the V plate on my RR5, so I need some ferrules to go in the holes. The thing is that I don't have an accurate measuring device, nor do I want to remove the V plate until I'm ready to. So does anyone know what size ferrules I'll need?

http://www.stewmac.com/shop/Hardware..._Ferrules.html

[thebigz]

I'm not sure why I posted this here instead of Tech. Sorry about that. The question still remains if anyone knows.