Description: Made of high quality materials and long service life. Improves the flow and performance of the engine cooling system. Please note that silicone hoses are not suitable for transferring oil or fuel. Note: Please allow 3-5mm differences due to manual measurement. Specifications: Material: Silicone Color: Blue Size: 3.0 x 2.5 inches (76 x 64 mm) (L x D) Inner Diameter: 21.3 inches (54 m) Outer Diameter: 2.5 inches (64 mm) Length: 16.9 ft (76 m) Wall Thickness: 16.4 ft (5 m) Size Tolerance: +/-0.0 - 1.2 mp Working Pressure: Straight silicone hose