These new buttons offer players the opportunity to attach their strap w/ style. They keep the players' strap locked without the hassles or expense of traditional strap locks. The two-piece screw on design let's the player change styles easily while the oversized die-cast buttons and custom-fitted o-rings safely secures the strap. All hardware is provided and the installation process is simple. Replaces original strap button w/ no modification or damage to instrument.