Spool edge label clip

If you are using the shelving stuff then putting a spool underneath means that you're back to only being able to see the colour. We need a label clip for that. This clips to the edge of spools that have 3-5mm walls. There is a slight upward angle (or downward if you want it upside down on higher shelves?) They also allow you to clip the end of the spool without pushing it through the hols and bending off a whole loop.