Vacuum Drum, Head Type Open Head, Volume Capacity 55 gal., Material Steel, Gauge 18, Color Black, Inside Dia. 22-3/16 In., Overall Height 33-1/2 In., Outside Dia. 23-1/16 In., Bung Hole Dia. 2 In. NPT, Weight 35 lb., For Use With Pneumatic Wet and Dry Vacuums