Professional manufacturing, these tubes are very to use. It can be a universal replacement fitting for PC water cooling configurations, and reliable for long time to use. Made of , hard to break, light weight and , can better fit your demands. Features -Color:Transparent -Material:PC -Size:50.00X1.00X1.00cm/19.65X0.39X0.39in -Specification:5mm outer diameter with 4mm inner diameter; 10mm outer diameter with 8mm inner diameter. -Made with strong and rigid materials, simple but sturdy structure, practical to be used for long time. -Constructed with impact resistance and practical durability for everyday usage, to better fit your demands. -Detailed craftsmanship details, transparent appearance, can clearly see the contents of the tube. -Widely used for indoor and outdoor advertising, suitable for signs, light boxes, frames and many other uses. -Light weight, proper length, easy to use and take to any places you want, bring you convenience. Package list: 4 x Clear Tubes