I was very upset to see that my stylus had tiny hooks on the tips, whether my cat or kids had nibbled on it, or I had thrown it in my bag and scratched it it. I'm not sure, but it made it difficult to draw on the letter as it randomly "jumped" from nib damage, and I didn't want to pay $100 for a new pen! It worked beautifully and matched my pen. I am very happy to have found this product!