HardTube 16/13mm 90° Acryl (PMMA) 20/40cm 18568 The method most commonly used previously for water cooling systems is normal PVC hoses - now Alphacool offers another approach to water cooling. The Alphacool HardTube again brings more tidiness into the system which makes a much more structured impression. Specifications: Technical Manufacturer: Alphacool UV - color: Non UV-active Outer diameter: 16mm (5/8") Color: Transparent Max. Operating pressure: 4 Bar (at 20°C) Service temperature: -20°C bis 60°C Inner diameter: 13mm (1/2") Length: 60cm Material: Acryl Scope of delivery: 1x Alphacool HardTube 16/13mm 90° Plexi (PMMA) 20/40cm