Masterkleer PVC Tubing PVC (3/8" ID 1/2" OD) UV-Reactive Blue/Clear (10ft) Material: PVC Tubing colour: clear, UV-reactive blue Outer diameter: 13mm (1/2") Inner diameter: 10mm (3/8") Maximum operating pressure: 30psi (~2,07bar) Operating temperature range: -42.8C to 73.9C