Amazon.com: K&S 9807 Round Aluminum Tube, 8mm OD x 0.45mm Wall x 300mm Long, 2 Pieces, Made in The USA : Industrial & Scientific
EsportsMJJ Od 10 mm X 8 mm Id 304 Edelstahl Rohre Länge 250 mm Edelstahl Rohr : Amazon.de: Baumarkt
Amazon.com: New Lon0167 6mm x 8mm Silicone Translucent Tube Water Air Pump Hose Pipe 5 Meter 16.4Ft Long(6mm x 8mm Silikon Transluzent Rohr Wasser Luftpumpe Schlauchleitung 5 Meter 16.4Ft Lange : Everything