- Sometimes, smaller is just better. If the bike has a tight frame, which does not offer any room for a conventional bike bottle, for example. That's where the small TWIST bottle 450 comes in: It can be mounted on the smallest frames because compared to the TWIST bottle 600, it is a great space-saving option with its 450 ml (15.22 fl oz) of liquid capacity. Paired with the innovative magnet-mechanical mounting system, which allows for the bottle to be twisted off the bike instead of being lifted upwards out of a cage, there is no frame this bottle system does not fit!TWIST bottle 450 including TWIST uni base:If the bike has no thread inserts at all or if they are already blocked, the TWIST bottle 450 comes with the TWIST uni base. This universal frame adapter can be easily attached to any pipe with a width of 28-62 mm thanks to the wide TPU zip ties. The smooth rubber back of the universal bike bottle holder protects your frame against scratches and helps holding the uni base in place.