This black air line pipe has a standard 4mm internal diameter which will fit most pond and aquarium air pump. The PVC tubing is suitable for in outdoor ponds and also indoor aquariums
The Hose is FDA approved and manufactured to ISO 9001-2008 standards. It is tough, flexible and suitable for food contact applications.
Generally used for the transfer of low pressure water, various fluids and powders and light pressure air transfer such as pond and aquarium air pumps.