PMC 12mm ID x 15mm OD (1/2" x 5/8") 5 Metre Clear Flexible PVC UNREINFORCED TUBING Water AIR Pipe Food Grade Hose PENTECH : Amazon.co.uk: Business, Industry & Science
Bonerva Arin Glass Tube 15 x 20 (Roll of 50 Metres) : Amazon.de: Garden
uxcell PVC Clear Vinyl Tubing, Plastic Flexible Water Pipe 16mm(5/8") ID x 20mm OD 4m : Everything Else - Amazon.com