Description: Product TypeMotorcycle carburetor air fuel mixing screw/idle speed adjustment screw for PZ26 PZ27 PZ30 carb carburetor. Quality MaterialCrafted with high quality copper materials, motorcycle carburetor idle adjustment screw/air fuel mixture screw is built to withstand the rigors of regular use. Its durable construction ensures durability and reliable performance. Precision AdjustmentThe Carburetor Carb screw offers high precision adjustment of the air screw, making it easier to achieve the perfect mixture for your carburetor. This ensures efficient fuel consumption and optimal engine performance. Replacement PartsReplacement Air Fuel Mixture Screw/ idle speed adjustment screw for PZ26/27/30, replace your old, damaged, or broken carburetor screw of dirt bike, motorbike, motorcycle. Easy to ReplaceThe Motorcycle Air Fuel Mixture Screw is special screw on an engine's carburetor that controls how much air mixes with the fuel, adjusting this screw changes how fast or slow an engine idles and how smoothly it runs. Specification: Material: Copper Size Chart: Idle Speed Screw: 4cm/1.57inch Mixing Screw: 4.75cm/1.87inch Package Includes: 1 PieceAir Fuel Mixing Screw Or 1 Piece Idle Speed Adjustment Screw Note: Please allow slightly errors due to manual measurement and different monitors.