Tractor & Lorry Air Brake Female Coupling M22 or 1/2" BSP
Air Brake Coupling (Female) – Service Line – 1/2" BSP or M22 Female. 1/2" BSP Female M22 Female Thread BS AU138a:1980 – UK Made. Thread Options 1/2" BSP female or M22 × 1.5 female. Designed for standard truck and trailer service lines.