Well, I ain't buying these no more.
Not because there not keeping my strap locked to the bass, no.
The opposite is true for me.
I bought two sets, and on all four, the outer knob fell of during show, so now i cant get the god damn straps of, even if i want to.
And is hard, to not say impossible, to reach the screw to open the locks.
Pros:
+ Keeps you strap attached
Cons:
- Keeps you strap attached, even if you don't want it to.