Knitter's Pride Center Pull Ball Winder or Nostepinne. This handheld Knitter's Pride Nostepinne Wool Winder is an inexpensive and practical solution for winding yarn into balls. It's portable, lightweight and easy to use, and is finely sanded and buffed for smoothness and shine. Gripping grooves are provided so there's no chance of slipping while winding.Dimensions: 12" approximate length; 4" circumference at width point