Imperial Tap Holder

I got tired of having my taps roll around my work cart and tool box so I designed this tap holder. Its dimensions fit a standard Uline utility cart in the cutout section by the handles. It holds taps ranging from 10-24 to 3/4-11 (no 9/16 slot though as I don't use that bolt size in my line of work). The holders have a square drive to help keep the taps from wobbling around too much.