Enlarged 45mm oil filler hole for easier to refill oil.
• With oil dispensing gun to easily control the oil filling rate.
• With a dehumidify valve to filter the water from the air compressor.
• Compressed air could be stored in the tank and use for filling oil at any place.
• A clock or digital meter can be attached to measure the volume of the refilled oil. (optional part)
• Capacity: 25L