Amazon.com: Miwayer Guitar Strap Locks Flat Round Head Heavy Duty Metal Button Security Straplock, Dual Design Strap Retainer System 2PCS with 2 Rubber Block for Electric Acoustic Guitar,ukulele : Musical Instruments
2 PCS Guitar Strap Lock Chrome Plated Straplock Button for All Acoustic Electric Bass Guitar Strap Easy Fix & Remove Screw - Walmart.com