I have wanted a large bobbin like this forever and bought this at Beth's Spinning Loft in Howell. When I'm using my Woolee Winder bobbins I can get about 3 ounces/200 yards of worsted, plied yarn on the bobbin. Now with this lovely bulky, I can ply a good 400 yards into one skein. Before I had to split the yarn onto 2 skeins which I hated to do. Notice the huge orifice and yarn guides. I could make a super bulky single on here, but guess I would need another one to 2 ply.