Quick-connect coupling Plug for coupling Plug w. inner thread Plug for Quick-connect coupling with inner thread.Type 244.55Operating pressure: 0 - 35 barOperating tempature: -20˚C to 100˚CMaterial: galvanised steel. Plug w. outer thread Plug for Quick-connect coupling with outer thread.Type 244.56Operating pressure: 0 - 35 barOperating tempature: -20˚C to 100˚CMaterial: galvanised steel. Plug w. hose stem Plug for Quick-connect coupling with hose stem.Type 244.57Operating pressure: 0 - 35 barOperating tempature: -20˚C to 100˚CMaterial: galvanised steel. Plug w. push-on Plug for Quick-connect coupling with gland.Type 244.58Operating pressure: 0 - 35 barOperating tempature: -20˚C to 100˚CMaterial: galvanised steel. Plug w. kink protector spring Plug for Quick-connect coupling with kink protector spring.Type 244.59Operating pressure: 0 - 35 barOperating tempature: -20˚C to 100˚CMaterial: galvanised steel.