Just got some material but only came in enough to do a couple of trucks, so going to use mine as a gunie pig for some 25mm ones probably, but if anyone wants some after that should be able to whack up a couple more with the stuff i've got for a reasonable price

Its the proper stuff (UHWMPE in Black). Will only cost a couple of bucks to ship round the country.
I do not know the legalities of using them and if they need to be certed or not. I suspect they need to be however...