The MILWAUKEE M18 FUEL SWITCH PACK Sectional Drum System 1/2" 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 SWITCH PACK System utilizes a modular design with backpack straps allowing users to easily transport it to any roof, drain, crawl space or cleanout. The tool-free drum connection enables users to quickly switch between cable sizes or add a second drum, allowing them to reach 100' down the line. All SWITCH PACK drain cleaning drums are fully enclosed providing users with the best protection against job site mess. The POWERSTATE Brushless Motor provides users with more clearing power than corded units for tough jobs in up to 4" drain lines. Built-in REDLINK PLUS Intelligence improves user control, slowing the machine up to 5X faster than competitor drums. Milwaukee's M18 REDLITHIUM battery pack powers through multiple jobs on a single charge, providing cordless mobility, safety, and power supply to the drain cleaning industry. The 1/2" cable is best for use on 3" - 4" drain lines. Other cable sizes also available. The SWITCH PACK is also compatible with the CABLE DRIVE Assembly (47-53-2774) that allows users to automatically feed and retract cable up to 15-20 feet per minute. The CABLE DRIVE assembly quickly attaches to and swaps between any Milwaukee SWITCH PACK Drum with the Mounting Plate (47-53-2773) installed.