Big Rock Engineering Cordlok System (patent pending) The Cordlok System functions as a stress-relieving cord lock, strap lock, cord wrap, and more It's designed to be fully compatible with the most popular strap locks as a cord lock and cord wrap, or can completely replace them, using the supplied, beefier screw and Fender end button It also functions as an extraordinarily versatile cable management solution for studio, stage, audio, instrument, and AC applications The Cordlok System relieves the stress on your instrument cable and functions as a cord lock, strap lock, cord wrap, and more It's designed to be fully compatible with the most popular strap locks as a cord lock and cord wrap, or can completely replace them, using the supplied, beefier screw and Fender end button