Carrera TDF circa 2007

migrantwing

I have an old Carrera TDF that needs doing up. I last used it a few Winters ago but haven't used it since. The group set is Sunrace R80, which serves its purpose, but isn't the best quality stuff. My question is, what size bolt is holding the cranks on. It's rusted a little and will probably take some getting off, just need to know the size as I don't have that particular size socket.

Any old TDF owners out there that can help with my query?

TIA

Salsa

Crank bolts are 14mm.