PRODUCT DETAILS Wall Thickness: 4.5mm, 3-ply Inside Diameter: 38mm (1.5") Standard Length: 90mm (3.5”) Standard Color: Blue Working Temperature: -76°F (-60°C ) to +500°F (+260°C) Working Pressure: 0.3 to 0.9MPa Bursting Pressure: 2MPa Size Tolerance: +/-0.5mm Application: Universal Note: Not suitable for fuel or oil transfer TTR Silicone Hoses are made from high quality woven thermoplastic and pure silicone materials to form the highest quality engine hoses and offer longer life .