Many different types of design and individual structures, some of which are highly complex, are created in the areas of operating material, device, special machinery and also trade fair construction using normal aluminium profiles. They are used to secure workpieces, for panelling all types of machinery, used as casings for safety purposes or for forming the basis for presentation elements and trade fair booths. A flourishing accessory market has grown up around these profiles. Accessories that make installation and removal quicker and easier all the time, preferably without the need for tools. The quick clamps now being presented can be used with all of the most common aluminium profile systems and also on T-slot tables for mounting, clamping or bracing components and workpieces.