This one of a kind heavy duty guitar capo offers the ability to adjust the spring tension and aperture of the capo with a twist of the spring. The capo works on Acoustic Steel Guitars from 6 to 7 and also 12 strings. Need more tension? Just twist the spring counterclockwise, if holding with the left hand, and you will have a capo that does not causes buzzing or overtuning. Made by @lorian.world (Instagram)