M18 FUEL™ SWITCH PACK™ Sectional Drum System 5/16" Kit is the first drain cleaning solution that combines the benefits of sectional and drum machines, creating the single most versatile and mobile machine on the market. The drain cleaning machine allows you to tackle the most frequent challenge of any drain cleaning application - getting the machine onto the job. The SWITCH PACK™ System utilizes a modular design with backpack straps allowing you to easily transport it to any roof, drain, crawl space or cleanout.