Description This sale is for just the 5 exhaust clamps , these can be used on European and USA spec 912 Porsche exhausts , they are a heavy duty clamp with extra reinforcing around the bolt section . You will get 4 small clamps these are for the heat exchanger sections and for the connecting piece that slots into the main box itself , the large clamp is for the tailpipe into the connecting piece . Clamps are Stainless steel with a hi tensile tensioner screw  . (Images of exhaust and clamps is to just show where the clamps go , these clamps are what I used to sell , but I have now changed to the stainless steel ones . )