Needle & Seat Hardware Kit, Fits: Holley Carburetor Specs: *Sold As a Pair of Kits for use on Two Needle & Seat *This Kit Includes: - High Quality Reusable Nylon Gaskets & Factory Style Fiber Gaskets (x2) - Adjusting Nut (x2) - Lock Screw (x2) - Needle & Seat O-Ring (x2) *Fits: 2300, 4150, 4160 & 4500 Series Holley Carburetors and More !! *Also Works With Similar Style AED, Quick Fuel, Barry Grant, Street Avenger & Demon Style Carb *Part Number: 34-7 *These are Genuine Holley Performance Parts *These Parts Will Come In Bulk Style Bag Packaging