The quality of KS Tools was unknown to me, but has fully convinced. I need the 17mm KS Tools 911.1317 1/2 inch bit Socket for Allen screws for a transmission fluid check cq change in the 1.4 16v engine our Skoda Fabia (Bj. 10-2005). For many VW, SEAT, Skoda and Audi gearbox man brought this 17mm wrench. This bowl brought man necessarily because the Full and drain plugs are too tight. After the first rotation because I also have because KS Tools used 17mm Allen L-key (even Amazon), but one has not really needed. The supply and delivery via Amazon was smooth (as always). Product received within 2 days. Völkommen satisfied.