Aeroquip FCN1220 #12 AQP Socketless Hose Black 20′ Air Brake Compressor Discharg. EST, MON to FRI. Brake > Electrical Connectors > Air Brake Compressor Discharge Hose Connector. Aeroquip FCN1220 #12 AQP Socketless Hose Black 20. Aeroquip – FCN1220 – #12 AQP Socketless Hose Black 20′ – Hose – AQP Socketless Hose – 12 AN – 20 ft – Rubber – Black – Each.