The Bulldog Winch 1-Gallon Air Tank lets you store and transport compressed air for your on-board air system. The steel tank has a black e-coating for maximum corrosion protection. Eight total bungs provide numerous attachment options, including two 3/8 female NPT ports and four 1/4 NPT bungs located around the center circumference â for mounting the tank with feet in 4 different positions â with a drain cock positioned at the bottom. Model#: 42002. Eight total bungs provide numerous attachment options (2) 3/8"" female NPT ports; (4) 1/4"" NPT bungs located around center circumference Tank can be mounted with feet in 4 different positions | Bulldog Winch 1-Gallon Air Tank with 8 Bungs in Black