A self-evacuating vacuum oil extractor drain, likely used in automotive settings for draining and collecting waste oil.
It features a large capacity tank (e.g., 20 or 30 gallons) for ample waste oil storage.
The design includes wheels and an ergonomic handle for easy mobility and positioning in a workshop or garage.
It's designed to simplify oil changes by allowing mechanics to drain oil into the unit and then pump it out using compressed air for disposal.
Some models offer adjustable funnel heights to accommodate various vehicle types and lifting equipment.