The Additel ADT100M20MNPTF4 Adapter, M20 x 1.5 Male to 1/4 NPT Female Hand-Tight Quick Connector is designed to extend your pressure calibrations to a convenient location to adapt from one pressure connection to another. Each test kit has 5 feet of flexible hose rated to 8,000 psi (550 bar) or 15,000 psi (1,000 bar) which connects a male NPT, BSP, or Metric connector to a variety of female quick connectors. Additel's specially designed quick connectors allow for hand-tight connection without the need for wrenches or Teflon tape. The Additel ADT100-M20M-NPTF4 is a great accessory to any pressure pump or controller.