You rotate the tabs and the opening gets bigger. You put it on the button outside your strap, cam it back to a smaller opening and Viola! No more close calls (or worse.) . . .
Not to be pedantic but a viola is a musical intrument. Voila (pronounced vwa-la) is a French word that means "see," like when it says "lo and behold" in the Bible. A columnist for a local (St. Louis) computing monthly once spelled it "walla" so yours isn't quite the most egregious example I've seen but it's still annoying.
Strap Lock Endpin Jack
in Acoustic Guitars
Posted