Suitable for automotive and marine applications. 3 to 5 ply reinforced construction our straight hoses offer excellent build quality with an inner liner. Polyester reinforced material suitable for Coolant / Glycol, Water, Steam & Air Etc. Diameters from 8mm to 19mm are often used for water connection, breathers, heater matrix etc. Bigger diameters are ideal for coolant, intercooler, air intake etc. 8mmID - 95mmID are 76mm (3") long. 102mmID - 152mmID are 100mm (4") long. Supplied in Black as standard. As stocks allow these will come with Pro Logo.