An air hose connects the compressor to the tool, transferring air at high pressure. Strong, flexible air hoses and fittings are essential to maintain an air tool’s performance under constant airflow and pressure.
Air hoses are measured by their internal diameter (I.D.) — the larger the I.D., the more air the hose can carry. Connectors, also known as couplings or splitters, are used to join a hose to another hose, connector, or tool. BSP threads come in BSPP or BSPT; measure across the outside of a male thread and the inside diameter of a female thread for the correct size.