I'm stringing my new friends racket. He is an exchange student from The Netherlands. Anyway he wanted it done off his real, one is a Tyger synthetic gut (looks really cool, a bright luminescent orange) and the other is a Kevlar (ugly brown color). Does anyone know anything about it or if they are available in the US. He loves em and I want to try a set off his reels but I don't want to fall in love with strings I can't use.