I purchased this product for my Arts and Crafts project but unfortunately, it was a complete waste of money. Through trial and error, I found that these stoppers do not actually keep the needles in place. It was frustrating to constantly have to readjust the needles .The only pro I can think of is that they are small and easy to store, but that doesn't really matter when they don`t work. Overall, I do not recommend this product for anyone in the Knitting & Crochet community..See full review