PrimoChill PrimoFlex PRO LRT 7/16" ID Water Cooling Tubing is designed and manufactured to exacting standards for todays high performance PC water cooling systems. Low Radius Technology allows for tighter bends without the kinking that can cause cooling failures or reduce performance. Their special Anti-Microbial formula helps keep your cooling loop pristine - which keeps flow rates up, reduces maintenance and just flat out looks better. PrimoFlex Pro LRT wouldnt be the choice of pro modders and high performance water coolers if it also didnt have killer looks and excellent sub zero performance. Available in an ever increasing range of UV colors as well as clear, the PrimoFlex Pro LRT stays flexible even when subjected to the lowest temperatures. The proprietary blend of extremely low durometer PVC (polyvinyl chloride) and a more rigid polymer resin gives PrimoFlex Pro LRT its unbeatable bend ratio and durability. Even under exacting laboratory set-ups with abrupt small radius bends and multiple direction changes, PrimoFlex PRO LRT tubing resists twisting and collapse - a common problem when using other lesser brands.