First let me say that I was skeptical about the price. However, my KontrolFreeks eventually died and I needed a replacement, but didn't want to spend $15 on a couple of rubber pieces. Since I use multiple controllers, this can easily add up. So I settled on these baddies for half the price and double the amount. Yes they are not as good as KontrolFreeks but they are ok and fit very well. I've been using it for a few weeks now and not once has anything popped out of the stick or anything. I would say they are 8/10 similar to Kontrolfreek in feel and use. They're not as soft and sticky as Kontrolfreek, but their texture improves traction. For the price I find it unbeatable so far. If they continue I will be very impressed!