For the operation of extensions, tapping valves, gate valves and hydrants in the above-ground and underfloor area. The quick-change connection from square 27 to square 14 means that the KOMBI operating key can be used in any installation situation. Both handles are rubberized for safe working, and street caps can be opened easily with the integrated hook. In the standard version, the hook is optional and the square 27 is fixed.