Music Nomad Acousti-Lok Strap Lock Adapter for TAYLOR® Guitars with a 9 Volt EXPRESSION SYSTEM® Battery Box MN272Music Nomad MN272 Acousti Lok Strap Lock Adapter for Taylor GuitarsYou 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 TAYLOR acoustic guitar without permanently modifying it. Designed to be used with SCHALLER style strap locks (not included), Acousti Lok's strong solid brass keyhole ring construction gives you the security you have been looking for.