This 2-Pc. Snap 'n' Grip Wrench Set tackles the jobs of multiple sized wrenches. These universal wrenches suit nuts and bolts from 9mm to 32mm. The practical tools effectively self-adjust to the size you need and can be used with all systems of measurement. The small wrench has a different-sized head on each end, while the large wrench has a single large head for bigger nuts and bolts, irrespective of their size and shape, as the wrenches adapt by themselves. The solution to all your problems with taps, valves, pipes, lines, radiators, boilers, wheels, etc.