I had to replace my previous endpin because the securing screw was... well, screwed. This one is so easy to tightly secure, I have it on my bass for over two years and not once it came loose, not once my fingers hurt while trying to secure it. The only unexpected effect of this is that the pin itself is a hollow metal pipe, something you can hear instantly after installing, especialy when playing with a bow. It produces a somewhat metallic resonation. Nothing I didn't get used to after half an hour of playing though.
Installation was made by a luthier, he had to widen up a bit the hole on my bass, so that's also something to keep in mind. Not all basses/endpins share the same specs.
The rubber end made it for about two years of playing, it has now started to deteriorate. I have to say I wasn't very kind to it, used it on many kind of ground types from marble to gravel. So, no hard feelings there, didn't expect it to last forever.
All and all a good product of good price/value, would buy again, would recommend.