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