It is an awesome lock. Works safe and perfect if installed properly. I use it on a heavy handmade bass, hanging on leather strap. But one must make sure to put it on a strap which is not too thick. For thicker straps buy a longer thread version. The main point is to screw the nut to the level when it lets the ball enter the lock deep enough. Otherwise secure lock might not be guaranteed. Also keep in mind that ball-end screws fit most of the basses, however, it is too thick for Yamaha TRB JP bass. One might need delicate carpenter's intervention. 10/10 would Secure Lock again.
Loxx straplocks are outstanding. They're very well made and consistent, they look great, they're low profile (so they hold the strap much closer to the guitar - much more secure) and they're simple to fit and use. I have fitted them to all my electric guitars and basses, as paired with a good leather strap they're perfect. Competing products have always seemed awkward by comparison. My only criticism is that the Loxx tool for fitting them could be longer and thicker for more leverage, but you only have to fit them once, so it's not a major concern.
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