You probably have a dozen Allen Wrenches somewhere, but if you can't find any of them and need to put something together, ...

three hex bits sized 1/8, 3/16, and 1/4 inches, and 12 square bits ranging from SQ1 to SQ3. Finally, the set's seven six-point sockets range in size from 3/16 to 7/16 inches. Ultimately ...