t-55-3 hanson plunge barrel mixer hanson for mixing liquids that come in sealed metal or plastic 55 gallon containers. to remove the lid can be very time consuming and shorten the shelf life of the product. by entering the pouring spout with the mixer in the closed position you get in the closed position you get tornado mixing action without removing the top. -1/2" diameter x 36" long shaft. -3 mixing heads -simple to clean