For one thing, its ingenious design: its patented over-center locking action provides an unrivalled combination of power, speed, accuracy and ease of use. One smooth flip of the lever locks it securely in place, and removes it just as quickly.
And the Shubb capo is BY FAR the best at not creating 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 it doesn't pull the string off center. As a result, no re-tuning is necessary!
Precisely machined and carefully hand assembled, a Shubb capo is manufactured without compromise. Simply holding one in your hand conveys a sense of quality. Snapping it solidly onto a guitar neck in about one second, and then playing without having to retune will confirm its reputation for excellence.