Double paired water key
A double paired water key has a handle with two opposite ends, a shaft extending from one end of the handle, two opposite ends upon the shaft, and at least two concentric openings extending into each end of the shaft where a user may select a pair of openings on the shaft extending from the handle. The openings have various internal shapes, preferably square, and at least two different widths. In each pair of openings, the opening with the least width has its position inwardly from the remaining opening, towards the handle. Each shaft has a tip with at least two sizes of opening. The two ends of the shaft provide four sizes of opening readily selected by a user. Each opening has rounded corners.