ELECTRIC DRUM-TOP VACUUM HEADS HAVE AN ELECTRIC MOTOR FOR CONNECTING TO AN ELECTRIC POWER SOURCE THEY GENERATE STRONG SUCTION TO DRAW WET OR DRY MATERIALS INTO AN ATTACHED 55-GALLON DRUMDRUM-TOP VACUUM HEADS ATTACH TO A 55-GALLON DRUM TO SUCTION WET OR DRY INDUSTRIAL MATERIALS INTO THE DRUM FOR STORAGE OR DISPOSAL THEY HAVE NO TANK TO EMPTY OR CLEAN OUT SO THEY CAN BE MOVED FROM DRUM TO DRUM AS NEEDED THESE VACUUM HEADS ARE IDEAL FOR CLEANING UP CHIPS DUST DEBRIS SLUDGE AND LARGE SPILLS THEY CAN