Spool for weed wacker line

This was designed to allow you to carry replacement sections of weed trimmer line along with you while you trim you grass, this helps to prevent a sometimes long walk back to your shed, shop, or garage, after conveniently running out of line at the farthest location in your yard.(just make sure it loaded before you start your yardwork)There is a hole through the side of spool (see pic #3) to start your line storage adventure, after inserting your line start winding it onto the storage spool until you near the end of your selected length (mine holds around 20 feet or 6 meters) When you have finished winding on the spool there are 4 pairs of holes along the outer edge to allow you to pass the end of the line outward through one and back through its partner to keep the line from unwinding from unwinding until you need it. assembly hardware:4 ea #10-1" Screws to attach this to my trimmer shaft. Yes, I did check out how it works and sure enough I ran out of trimmer line in my front yard