This is a Czech reproduction of a set of chinstrap bales for the Austrian M17 steel helmet. The item is very solidly made with good strong material and the rivet is included. You will have to pin the rivet with a hammer so it holds the bale in place.  It is only $6.00  to ship this item anywhere in Europe and just $6.50 to ship this item anywhere in the US, Australia, NZ, Canada and most places in Asia.