What size bolts for rear exhaust mountings?

Seemed to have asked this a few times without much response.....I could do with knowing so I can order some - mine are pretty corroded, so I don't want to attempt to take them off to find out if I can't refit them.



Could one fo you kind fellows please confirm the correct size I need to order. eg. M8 40mm?



Sorry for such a lame question, just I need to know pretty quick so I can get them ordered in time for fitting.



(oh, and yes, I'm aware they can be bought off Ebay from the likes of MGMania, but I need other bolts 'n' stuff, too - and I have a seller lined up that I would prefer to use for cost reasons)



Cheers.

Steve.

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