Forget about readjusting your tone at every gig and lock in your sound settings once and for all. D'addario's patented loknob tour cap prevents unwanted knob movement during transit or set-up, can easily be removed for adjustment, and requires no additional modification. Available in two colors and sizes for split and solid shaft pots. D'addario is known for innovative, problem-solving, quality musical accessories and offers a complete line of award-winning accessories including cables, picks, tuners, capos, straps, humidifiers, maintenance tools and more.