Each driver in the new Crescent 7-Piece T-Handle Nut Driver Set converts from a straight handle to a T-handle. The set includes seven color-coded combo nut drivers that work on both SAE and metric fasteners from 3/16-inch to ½-inch sizes and also on six fastener types: hex, square, 12-point, e-Torx, spline and partially rounded hex. Special hollow shafts let the tools work over a long-threaded rod.
You can find more information on the Apex Tool Group website.