Meridian Winds Ergonomic Heavy Mass Saxophone Neck Screws are a hand-crafted, ergonomic alternative to the flat-sided screws that have been the status quo on saxophones for over 100 years. The heavier mass of a Meridian Winds neck screw may also provide tonal character & color according to some discerning artists. We developed these screws with ergonomics in mind. If you play saxophone, you know how much energy has been expended through the years in twisting your wrist to tighten your neck screw. The MW Neck Screw eliminates twisting the wrist and requires only that you roll it between your thumb and index finger.