Description The OPW 21GU-H21 Def Hose 1IN X 21FT is the de facto standard for hoses in Europe. Designed with integral swivel couplings and an anti-kinking sleeve, the 21Gu hose is easy to install and use. The OPW 21Gu Hose meets compatibility testing as specified in ISO 22241 so that you can rest assured that your hose will last. Key Features Specially designed for DEF-flow applications Lightweight and highly flexible for easy customer handling Smooth bore, seamless fluoropolymer lining for exceptional flow performance Swivel end couplings provide for easy installation Durable, reliable, long-life performance and maximum flow efficiency Anti-kinking sleeve at nozzle end to reduce wear on hose during use