The DREHMEISTER hose coupling is made of high-quality aluminium. It is used to adapt and connect 16mm and 19mm cooling water hoses. The protruding 22mm ring in the middle piece serves as an attachment point for both hoses and ensures a safe and even connection. At both ends there are additional slip-off edges with 1.5mm protrusion which secure the hose from slipping off. Afterwards the hose must be fixed with a screw or clamp provided for this purpose.