These Swiss-made hex keys were submitted by a reader who asked for no credit. Besides the fact that they’re made in the land known for fine watches, the main advantage over standard hex wrenches seems to be the color coding. Rather than reading the litte numbers, you can just grab the correct color.
The reader who submitted this said he couldn’t find them available in North America, and we couldn’t either. Have you had any luck?
Rainbow Hex Keys [PB Swiss]