internal stop mechanism - stops the flow of water and enables easy exchange of sprinklers without having to turn off a water supply extended clench mechanism ensures accurate and effective connection to the hose SAFETOUCH™ system provides a reliable grip and comfort of use, and also protects the product against accidental damages Product basic info Primary colours: Blue Additional colours: Black Weight unit: ± 51.9 g Material: ABS Physical properties Hose diameter: ± 1.9 cm Hose diameter inch: ± 0.75 in Connections Hose diameter quick connector inch: ± 0.75 in Hose diameter quick connector water stop inch: ± 0.75 in Hose diameter range: 19-19 mm Hose diameter range inch: 0.75-0 in (EN)