FAMI Adjustable Wrench,Adjustable Spanner, Universal Wrench,Quick Multi-function,New Snap'N Grip 9-32mm 2 packs Two universal wrenches that adapt to all kinds of bolts and nuts. With just one hand movement! Effective, practical, light weight system. Ideal plumbing, carpentry, mechanical and garden work. They are the solution to your problems with taps, valves, pipes and piping,radiators boilers,wheels. The secret is their self-adjusting technology, which allows them to automatically adapt to the size.