With the use of the GARDENA Hose Joiner/Repairer, hoses can be quickly and easily repaired without tools. The damaged hose part is simply cut out and the GARDENA Hose Repairer is inserted on the spot. POWER GRIP: Specially shaped sleeve nut for a very tight fit and trouble-free assembly. It is suitable for 19 mm (3/4") hoses. It can also be used to join two hoses together.