Hot sale low price 8mm PVC tube Diameter scaled water level ITEM NOPVC tube outer Diameter(MM) PVC tube inner Diameter(MM)Scared round ... of Origin:Zhejiang,Website:http://www.jhyijiatools.com, China (Mainland)PVC tube length::5M, 10M, 15M, 20M, 25M, 30M, 35MPVC tube ... :10-20 daysSpecificationsscaled water level: 2pcs acrylic graduated tube and PVC tube. Size: 3M, 5M, 10M,. 15M, 20M, 25M, 30M, 35M ...