The Shubb Capodaster C1 for electric / western guitar from the USA is screwable for all acoustic and electric guitars.
The patented locking mechanism offers an unmatched combination of power, speed, accuracy and effortless usability. furthermore, the capo from Shubb causes no problems when tuning. The special rubber works exactly like a fingertip and does not bend the strings over the frets. Therefore, no retuning is necessary.