90 Strong Acetal Copolymer elbow for smooth directional changes. Equal pipe fittings for seamless connections. Can also be used for drinking water movement. COMPREHENSIVE - One of a comprehensive range of high quality components for the John Guest Speedfit® Air Supply Ring Main System. QUICK - Install your own workshop compressed air ring main quickly, easily and competitively with the CAS system of fast fit compressed air fittings. VERSATILE - Can also be used for drinking water movement. PRECISION - 90 Strong Acetal Copolymer elbow for smooth directional changes. BALANCE - Equal pipe fittings for seamless connections.