Kleinn Air Horns 6225RT Air Tank for Jeep - 0.5-Gallon Capacity is a replacement Air Tank for the Kleinn Air Horns Jeep Kit-1 Air Horn System. Featuring a Mild Steel Construction and an attractive Black Powdercoat Finish this Kleinn Air Horns Air Tank for Jeep - 0.5-Gallon Capacity is also Internally Coated. Engineered with a Tank Capacity of 0.5-Gallons and includes Four Ports measuring 1/8-Inch NPT this Kleinn Air Horns Air Tank for Jeep - 0.5-Gallon Capacity is the perfect replacement piece. Too Loud? Too Bad!