Description Made of high-quality aluminium alloy material, this car air horn is durable and wear resistant, which is installed on the engine to increase the sound. Smooth surface for reducing air friction and increasing air input, making sound loud and clear. Features - Color: Silver.- Material: Aluminium alloy.- Size: Approx. 11.00X7.50X7.50cm/4.32X2.95X2.95in.-Made of high-quality aluminium alloy material, durable and wear resistant.- It is installed on the engine to increase the sound.- Smooth surface for reducing air friction and increasing air input, making sound loud and clear.- Increase the roar of the engine and appropriately increase the torque and horsepower.- A good choice for your father, boyfriend, and those who has a car.