Sometimes out of sight, out of mind is a bad thing. When you have neat tools or devices that don't hang well on racks, they usually end up in boxes, bins, or drawers and collect dust. It can hold a variety of items like pens, pencils, punches, brushes, scribes, files, markers,... you get the picture.. to keep them in easy reach and where you can see. This insert fits a standard circular pegboard screwdriver holder that has ~3/4" ring holders and locks in place.