Stainless steel exhaust studs and flange nuts.
To fit all GSXR600 models Years 2006-2010
 
These replace the standard bolts with the stud and flange nut arrangement, a common Suzuki upgrade
They come with the machined hexagon in one end so fitting and removing if necessary is simple, will not rust and will continue to look great on your engine for years to come.
 
Always apply a smear of copper grease to all mating threaded parts.