This is a replacement cone for a Royal Yarn Winder - for example: http://www.amazon.com/Royal-Yarn-Winder/dp/B00JLOBKIM/ref=sr_1_4?ie=UTF8&qid=1447637150&sr=8-4&keywords=royal+ball+winder
Category: HobbyThe author marked this model as their own original creation. Imported from Thingiverse.