If the bike’s thread inserts are already blocked or it does not even have any, the TWIST products can be mounted to the bike with the Fidlock TWIST Uni Base, the universal bottle holder. It's securely and non-slippery fastened with the aid of two zip ties. On the top tube, the down tube, or the saddle tube – the TWIST uni base can be attached anywhere on the frame.Fidlock TWIST Uni Base FeaturesFor frame tubes with a width of 28 - 62mmRubber back for frame protectionFits all TWIST modules More info