This capo is not acceptable for acoustic guitars with low tension, as the clamping force is so tight that it bends the strings up. I would recommend getting an easily adjustable capo instead for much more versatility for the same price. I have seen the videos about adjusting this capo, and I am a 200 pound male who lifts weights daily and it hurt my hand and took a very long time to pull the capo looser. Even then, the tension was not equal across all strings. I would much rather turn a knob than gorilla force this into a suitable position.