These are much better than the rubber end caps that always slide off the end of the handle. Once installed, they don't move.
Have been using the RocketMesh end caps for quite a while, but they were so bulky. These give you a nice lip around the bottom, without making the shaft any bulkier. They fit very tightly. Really like these, though they’re pretty expensive. Got first one in an STX Fiber X shaft, but have since bought more.
Very streamline makes for smooth tape jobs. Won't come off and you gotta love that
Eliminates tape ring hassle. Still provides good feel at end of stick. Once installed, it doesn't move. Easily transferred to a new stick if needed. Haven't broken one yet.