Norgren PU2-0704025C Polyurethane Hose, Black, A4X0.75

Factory colour: Black; Inside diameter: 2.5 mm; Material: Polyurethane; Max. operating pressure: 10 bar; Max. temperature: 60 °C; Operating medium: Compressed air; Outside diameter: 4 mm

Price: £ 1.49 from Conrad Electronic