Spring Capos attached from the side With spring Capos of this type are fast, but not adjustable.
Tension is determined by the thickness of the neck.
Kyser Torsion spring capo made of aluminum profiles. This concept was based upon Berner's observation of one of his wife's snap clothespins. Kyser first bought the patent in 1979. Trigger Due to disagreement among the inventors, the above patent was also sold to Jim Dunlop around 1985. They made a more elegant version with a soft, rounded pad.