TEN-HIGH Flexible Silicone Tube, 15mm ID x 20mm OD, Wall Thickness 2.5mm, Water Air Hose Pipe 2 Meter : Amazon.co.uk: DIY & Tools
sourcingmap Silicone Tube 20mm ID X 26mm OD 3.3ft Flexible Silicone Rubber Tubing Water Air Hose Pipe Translucent for Pump Transfer : Amazon.co.uk: Business, Industry & Science
Scootopia Lambretta DL & GP 20mm Air Hose
5m of Clear Transparent PVC Hose 16mm internal-20mm External,Suitable for air,Gas,Water and Oil,Aquarium Pipe : Amazon.co.uk: Garden