Alphacools HardTube family does get an additional sibling. The new HardTubes made out of borosilicate glass certainly bring a new level of quality into every system. The previous method that has been most commonly used for water cooling systems is normal PVC hoses - now Alphacool introduces a new approach to water cooling. The Alphacool HardTube additionally brings more tidiness into the system which enables a further structured impression. Borosilicate glass ticks every box on the checking list for watercooling systems. Stability and a brilliant appearance are not the only qualities that should lead to chosing this glass as even most chemicals and temperature flactuations can not harm the borosilicate glass. The whole chemical industry is depending on this glass and we can certainly say that this is not without reason. All glass tubes are compatible with the Alphacool HardTube connectors. Alphacool currently offers two classical sizes. One tube with a 16mm outer diameter and another with 13mm outer diameter. Further different length with 90 degree angles are introduced as its not possible to personally deform these tubes. To cut the tubes for the preferred length Alphacool recommends using a diamand cutting disc for the Dremel. For use with Alphacool fittings only.