Our CRT Racing Pump Nozzle Wedge Kit was designed to improve the top-speed of your craft by 1~2mph. The precision-machined wedge trims up your pump nozzle raising the bow of your craft for less drag substantially improving top speed. It features a unique double-sided lip to retain silicone sealant and prevent cavitation. Made from aluminum construction CNC and washers from marine grade stainless steel. Our Wedge piece is aluminum 6061 anodized black, construction with CNC Machine and the bolts and washer are made with marine grade stainless steel.