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Ducati Corse
Posts: 3,134
Join Date: Jan 2002
Location: notts
Mood: Bloo and Yellow.. and Red now ;)
I think they are M8?
Have a look at the bolt that goes in there. If it's a cap head, a 5mm key means M6 thread, 6mm key means M8.
If it's a hex head, 10mm means M6 and a 12mm or 13mm means M8.