AUTO LOCKING GUITAR STRAP: The D'Addario Auto Lock Guitar Strap is a simple integrative quick release guitar strap locking system built for your performance that easily locks in place to keep your guitar safe and secure. FITS EXISTING GUITAR PINS: Unlike ordinary guitar strap lock systems, it is designed to fit securely on your guitar's existing end pins, eliminating the need to change the hardware on your guitar. No extra parts, no installing hardware. EASY TO USE: The latch is spring-loaded, so it automatically clamps down on the strap button and will not release unless desired. MATERIAL & LENGTH: Soft nylon material adjustable from 30” - 55” AVAILABLE IN VARIETY OF MATERIALS & COLORS: The D'Addario Auto Guitar Locking Strap is offered in a variety of colors and designs.