You can finally let go! Music Nomad's patent pending Acousti-Lok is a strap lock adapter that adds the safety & flexibility of using strap locks to your acoustic guitar without permanently modifying it. Designed to be used with Schaller® style straplocks (not included), Acousti-Lok's strong solid brass construction gives you the security you've been looking for. Black finish, fits all 3/8" x 32 standard thread jacks. Compatible With Most Martin® Guitars with Fishman® Electronics, Taylor® Guitars up to 2002, Switchcraft® output jacks. Not designed to be used on recessed or flush mount jacks. Click here for Schaller Straplocks.