Universal Multi-Tool Wrench Inch/Metric. One tool empowers users to work on sixteen different fastener sizes. Sizes include 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4-Inch; 8, 10, 11, 12, 14, 15, 17, 18 MM. The universal design also has access to six different fastener types. One wrench, many fasteners - 46 Inch/39 MM. Spinning sockets on each end allow access to fasteners from many different angles.