I use a Wacom Bamboo Create tablet, and I've gone through a few nibs so far that came with it. I wanted to be prepared and order some spares. It's important to change them before they wear all the way down or it becomes really tough to get the old nib out. I had a nib worn all the way down and I ended up having to use a sewing pin to jam into the nib's side and pry it out that way. The tool included with the pen didn't grab it. So, if you're stick, give that a try!