Aluminium Hose Joiner with 32mm O.D. from Merlin Motorsport
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102mm x 1.5m long Round Semi-Rigid Aluminium Hose - Verplas
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H&C VENT Flexible aluminum pipe, diameter 4 Inch 100 mm, pipe diameter, HVAC 1.5 m, maximum length, air duct, ventilation flex hose, exhaust air outlet, hot air supply system element : Amazon.co.uk: