A kit includes a support block for quick cartridge couplings suitable for being mounted on a machine and for being hydraulically connected to a hydraulic circuit on said machine. The block of the kit includes one or more seats and is characterized in that it may house cartridges of different types and sizes in said seats in an interchangeable manner. To this end, the kit includes an adapter configured to be inserted into said one or more seats and to house in turn one of said cartridge couplings therein.