Abbey Machinery offer two different Tandem Tanker ranges, which include Tandem and Tandem Recess Tankers. The Tandem Tankers range consists of six models with sizes ranging from 2250 gal to 4500 gal and the Tandem Recess Ranger consists of four models with sizes running from 2800 gal to 4300 gal. See more information on the Tandem Tanker Range here
