D’Addario PW-CP-09 Tri-Action Capo Adjustable Tension Overview:

The Tri-Action capo assures buzz-free, in tune performance at any fret. The patented Tri-Action geometry reduces the force required to open and close the capo and applies even tension regardless of neck profile. Combined with the micrometer tension adjustment and direct horizontal pressure, the Tri-Action Capo virtually eliminates pulling the strings side to side and the need to retune during use. Additionally, the lightweight aluminum construction adds negligible weight to the neck of the instrument. The capo features an integrated pick holder. Designed in collaboration with Ned SteinbergerTHE RIGHT TENSION FOR A DYNAMIC SOUNDThe patented Tri-Action Capo reduces the force required to open and close the capo and applies even tension regardless of neck profile. Combined with the micrometer tension adjustment and direct horizontal pressure, the Tri-Action Capo virtually eliminates pulling the strings side to side and the need to retune during use. The sleek aircraft grade aluminum construction can withstand the toughest playing/touring schedule while adding negligible additional weight or obstruction to the instrument.