This product includes 4 carburetor mixture screw sets compatible with Intruder VS800 (1992–2004), VS1400 (1987–2004), Boulevard S83 (2005–2009), S50 (2005–2009), and VZ800 Marauder (1997–2004).Made from copper, these screws are designed for and consistent in carburetor systems.Each set provides the necessary components for balanced fuel-air mixture adjustment during carburetor rebuilds.The product meets applicable performance standards and is engineered to maintain stability under typical operating temperatures.