C2 - Capo for classical guitars, Shubb.
Shubb C2 Nylon String Guitar Capo, Polished Nickel
Since 1980 the Shubb capo has set the standard against which all others must be measured. It is the first choice ... often the only choice... of more than a million musicians worldwide. The serious guitarist will settle for no less.
What makes the Shubb capo so special? For one thing, its ingenious design: a patented locking action which 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.