This set of Nut Driver Holders is designed to hold 6 SAE Nut Drivers, Sizes 1/2, 7/16, 3/8, 11/32, 5/16, and 1/4. Like our other tool organizers, these are designed to mount to 1/4" aluminum rods to help hold everything in place, to keep your toolbox drawers organized.
 
The holes are sized for 8mm neodymium magnets to help hold the nut drivers in place, as well as to help hold the entire set to your toolbox drawer!