The Shubb C3B Original 12-string Capo is 2-1/4 in. and slightly curved to better fit any steel string guitar with a wide fretboard. Choose either nickel-plated or plain brass finish. The C3B capo features a patented locking action that provides an unrivaled combination of power, speed, accuracy and ease of use. One smooth flip of the lever locks the capo securely in place-and removes it just as quickly. And the Shubb 12-string capo doesn't create tuning problems. Its soft, resilient rubber is specially designed to work just like a fingertip, so it doesn't bend the strings over the frets. Its closing action is just like your hand, so the Shubb C3B Original 12-string guitar capo doesn't pull your strings off-center. As a result, no re-tuning is necessary.