A Swedish-made improved pneumatic coupling between the towing vehicle and the trailer. Fully compliant with today's Nordic standard. A car part with the task of connecting the towing vehicle's compressed air system with a trailer's braking equipment. Increased safety - The handle is red for added safety Better ergonomics - Easy-grip handle with durable rubber coating Longer service life - Hard anodized aluminum for increased wear and corrosion resistance. - Surface treatment on valve packages and other details completely in accordance with the high demands of the automotive industry. External thread M22x1.5. Thread Socket M16x1.5 Replaces WABCO Duo-matic 452 802 007 0 and 452 802 009 0