My cat was chewing on my joysticks and the rubber was uneven and one just wouldn't stay on. I figured I'd have to put a small amount of superglue on these skulls and others to keep them from spinning/falling since they don't have those weird rubber hooks that OEM Nintendo has. They arrived today and let me tell you these things are very, very safe. No rotation and feeling like they are just as safe or safer than the originals. Of course, time will tell, but I highly doubt it will cause any problems unless my cat decides to snack on it again. They fit well but it didn't last long and that's what makes them so secure. So if you need replacements I 100% recommend them and they are great value.