Please note: Due to special construction on Breedlove Guitars and Mandolins, where metal parts are located in the heel of the neck, it's highly recommended that only a qualified luthier perform a strap button installation. This installation requires only a one safe specific position for the strap button. NOTE: It cannot be installed at the center of the heel cap. If you have plans on installing a strap button, on your Breedlove Guitar or Mandolin, be sure to print out the following map to be used as a reference for your luthier of choice. Please do not attempt to perform this task yourself. And, keep in mind, whenever installing strap buttons, always start with a pilot hole using a small drill bit.