The Tusk Air Adjustment Screws are a great addition for those 2-Stroke lovers!! They replace your stock Carburetor Air Screw and allow you to make the necessary adjustments on the fly without the use of tools. They are made out of 6061-T6 Aluminum and anodized to give you that factory look. When in need of tools or parts for your motorcycle, ATV, and UTV think Tusk.