This is a great little invention to help out those avid fiber artists and particularly rug tufters.

Additional Cones can be purchased here

This unit is easy to put together and you can manually quickly wind a ball of yarn to the cone. 

Once it's wound just remove the cone from the winder and use it like a cone of yarn! When you run out, place the cone back on the winder and start again.

This is a huge timesaver!

This yarn winder winds up to 500g of yarn and the yarn is wound evenly and quickly. It can be used with 1 strand of yarn or wind multiple strands at once.