BXQINLENX 3/8" X 1/2" (9.5X12.7mm) Water Cooling Tubing Hose For PC CPU CO2 Laser Computer Water Cooling System 3.3FT (1M)(Clear) Length:1M. Super smooth,Soft and flexible and Resistance to bending. Very easy to cut and install to use. Inner Diameter: 3/8" (9.5mm) , Outer Diameter: 1/2" (12.7mm) , Wall Thickness:3/32" (2mm) Sold and by LENX