Drum filling vacuum head with auto shut off. Connect Drumit to a vacuum system to intercept liquids or solids. The lid assembly is constructed of stainless steel. Fitted with 3″ (7.62 cm) cam lock fittings. Supplied with a spare sight glass. Suitable for US standard 55-gallon open-top oil barrel (3 rib) with an opening diameter of just under 24 inch.