Hi All

I have searched this site and the net, and I can't find anything that will tell me what size the bolts are for the exhaust header on my Pulse Adrenaline K157 FMI.

Does anyone know? I need to replace the badly rusted ones that are on there now. I could source an original part from a supplier without knowing the size, but I would rather source a better quality such as a stainless steel etc etc.