The neck on your classical guitar is different than regular acoustic guitars. It has a flat fret board which requires a capo with no radius. The Kyser Quick-Change for classical guitars does not have a radius and is specifically manufactured with just the right amount of tension for classical strings.
This Kyser Quick-Change is expertly engineered and built to last. It is reliable and does just what it is designed to do — clearly raise the pitch of the classical guitar so you can play in a different key without returning or changing fingering.