The result of an ongoing collaboration between famed product designer Ned Steinberger, Jim D'Addario and D'Addario Accessories, the D'Addario NS Artist Guitar Capo is made from lightweight aircraft grade aluminium for use on acoustic and electric 6-string guitars. A patented micrometer adjustment mechanism allows the player to dial in the exact tension needed for any guitar, string gauge and playing position. This greatly reduces the need to retune your guitar during and after capo use. The aluminium construction provides light weight, ease-of-use and superior functionality at an affordable price.This version is designed to simulate Drop D tuning by all strings except the low E one step up when in standard tuning.