Designed specifically for classical guitars and instruments with flat (non-radiused) fingerboards, the Classical Pro Capo assures buzz-free, in-tune performance at any fret. The patented micrometer adjustment mechanism allows you to dial in the exact tension needed for clear ringing notes without excessive force in any position on the neck. This greatly reduces the need to retune your guitar during and after guitar capo use. The sleek aircraft grade aluminum construction of this premium guitar capo can withstand the toughest playing/touring schedule without adding any noticeable weight or obstruction to the instrument.