Rubber multi-purpose hose with a 5mm inner diameter is a hose that is designed for use with a variety of fluids, including fuel and oil. This type of hose is commonly used in automotive and industrial applications where it is necessary to transfer these types of fluids from one location to another.

The rubber material used in the construction of this hose is chosen for its durability and resistance to heat and chemical damage. The hose is also reinforced with layers of fabric or steel wire to provide additional strength and support.

The small inner diameter of this hose makes it suitable for use in tight spaces or when a low-flow rate is needed. It can be connected to tanks, pumps, and other equipment using metal or plastic fittings at the ends of the hose. This type of hose is often used as a radiator hose in vehicles, as well as for other fuel and oil transfer applications.