I bought these for my Fender Strat. I was surprised that original Fender strap locks were no dearer than other brands so got a pair.
They are nice and solid and I like the way they work, there is just one small problem and it could be my fault. They tend to unscrew on their own with the tops coming off mid gig. It may be that the ends on my strap are thicker than usual and so they cant get enough thread screwed on.
I use these strap locks on a standard seat belt style strap for my stratocaster. They are very easy to fit on to the strap and to the guitar. I did have to pack out the previous button hole in my guitar with epoxy putty as my previous strap button holes were too wide but once it had set and I fitted the new buttons they held very securely (The have remained secure a year later!). The locks themselves fit nicely to the straps, however can work themselves loose over time. To remedy this I use a little bit of PTFE tape to increase friction and stop them from slipping too easily. If you do this, then use a pair of pliers to fasten tightly then you shouldn't have to worry about them coming loose again for a long time. I'd say that release system used on these straps is ideal. You can comfortably and quickly attach and remove your straps with one hand. They are also compact enough that if, like me you take your strap off when you put your guitar back in its case, you can wind your strap up nice and tight to take up minimal case space. I am more than happy with them and will probably buy some more for future guitars.
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