Every home or property has, or should have, a below ground water shut off point called a Stopcock, Stop Tap or Toby. The turning point can vary in shape and size so our stopcock key is designed to cover most 1/2" & 3/4" crutch head valves and 1/2", 3/4" & 5/8" square stop taps. It has a very strong design which is needed to turn stop taps which become very stiff through time. Also comes with a longer stronger tommy bar handy tapered flat end on handle for lifting access covers. This 5 in 1 Stopcock key, comes with a corrosion resistant zinc plating.