Jones Stephens 4-Way Sillcock Key is a great tool to open and close most sillcocks without handles. It is great for use at apartment buildings and other multi-family units where water is metered to help prevent misuse or theft. This single tool opens the four most popular valve handle sizes 1/4 in., 9/32 in., 5/16 in. and 11/32 in. and has narrow ends to get in to recessed cavities. Our 4-Way Sillcock Key is made of steel for long life and is plated for corrosion resistance.