$6 · Guitar Strap Button

Martin Leather Guitar Strap Button; never used in original unopened package; part number 18ASHKBR Just slide the Martin strap button under the strings behind the nut on the guitar head, hook the strap's buttonhole over the back of the button, then fasten your guitar strap to the tough nylon button. No need to tie your strap onto the headstock or drill into the neck heel.