All internal parts are made from ultra tough engineering plastics for a long leak free life. Secure up to 10 bar, thanks to a triple locking system. The sleeve is easy to use even when wet because of the twin soft touch pads. The hose is firmly connected thanks to barbs that connect with the inside and outside of the hose. Hose kinking, hose swelling, and hose leaking at the connection point is virtually eliminated due to the ingenious flexible hose tail on the nut. Ref: UTST652