McFeely`s is known for Square Drive screws but even we realized that not everyone fastens with them. Some of the longer timber screws and sheet metal screws have a hex head. We have magnetic nut drivers in the "SHOCK ZONE GEOMETRY" for long life and they are color coded for easy identification. The 1/4" is red, 5/16" is yellow, 3/8" is blue, and the 7/16" is brown. Made in China.