1/4-32 Gas Main Jets Assortment Kit Fit for Holley Carburetors The aperture size is:70 71 72 73 74 75 76 77 78 79 Sizes (20pcs: 2pcs/Size)

Precision Dimensional Tolerances: Each nozzle's aperture tolerance is controlled to within ±0.001 inches, ensuring precise and controllable fuel flow and preventing engine idling instability and power fluctuations caused by aperture deviation. Copper Seal Advantages: Copper's excellent ductility allows it to fit tightly against the carburetor nozzle seat during installation, creating a reliable seal and ensuring stable fuel system pressure. Simplified Tuning: The 20-pill set includes 10 commonly used sizes (2 of each), allowing you to quickly swap out nozzles of different sizes for comparison during tuning. This eliminates the need to purchase individual nozzles, significantly improving carburetor tuning efficiency. Improved Fuel Economy: Precise fuel metering optimizes fuel consumption and prevents overfueling. Long-term use reduces vehicle costs and protects internal engine components. Tool-Free Installation: The 1/4-32 standard thread accepts common carburetor wrenches. Simply align the threads and gently tighten. No special tools are required, making replacement and tuning easy.

• 1.Widely Compatible with Carburetors:Fit for Holley carburetors, for precisely fitting AED, for Barry Grant, for Quick Fuel, for Demon, for Avenger, a dedicated jet kit for fuel system repair/upgrade in large-displacement engines or high-load conditions
• 2. Quick Size Identification: Each nozzle is clearly engraved with the model number (e.g., 70, 71) and both inches and millimeters. No additional measuring tools are required, allowing for quick identification of the correct size, significantly reducing carburetor commissioning and repair time
• 3. Core Fuel Control: Precise metering ensures stable power output and fuel efficiency even at high engine speeds and loads
• 4. High-Quality Copper: Constructed from high-purity copper with a gold finish, it offers excellent wear resistance and fuel corrosion resistance, ensuring accurate metering
• 5. Precise Specifications: Thread sizes range from 1/4"-32, covering 70-79. Full size 70 (0.070 inch / 1.78mm) 71 (0.071 inch / 1.80mm) 72 (0.072 inch / 1.83mm) 73 (0.073 inch / 1.85mm) 74 (0.074 inch / 1.88mm) 75 (0.075 inch / 1.91mm) 76 (0.076 inch / 1.93mm) 77 (0.077 inch / 1.96mm) 78 (0.078 inch / 1.98mm) 79 (0.079 inch / 2.00mm), each size contains 2 pills, a total of 20 pills, to meet the fuel metering needs under different high-load conditions