TO ANSWER SOME CONCERNS FROM OUR CUSTOMERS ABOUT THE YARN GUIDE: POSITION THE YARN GUIDE UPRIGHT AND PULL IT OUT 1 1/2 INCHES FROM THE BODY SO IT WILL NOT FALL DOWN! Capacity: 4 oz yarn balls. a handy tool for knitters, crocheters, and spinners. good for beginners too. sturdy construction with easy clamp-on base. maximum tabletop thickness: 1 3/4 inches; a great time saver at a very affordable price.