The Shubb Capo Noir fits almost all acoustic and electric steel string guitars. 2 inches wide, curved for a radiuses fretboard. Precisely machined of brass 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, and then removing it, all within about one second, will confirm its reputation for excellence.