Universal Silicone Vacuum Hose Tube High Performance Pipe 5 Feet Length (15/32 inch (12mm), Blue) Inside Diameter: 15/32" (12mm). Outside Diameter: 18mm. Wall Thickness:0.12" or 3mm Length: 5 Feet Please note that silicone hose is not suitable for fuel or oil transfer. Silicone hose is compatible with water or anti-freeze such as coolant.