The inner drum prevents leakage to keep the jobsite clean, it also features a quick acting slide chuck to lock cable. The K-45 family of drain guns are the professional's choice for cleaning small secondary drain lines. The K-45 is available in manual or AUTOFEED, the advanced 2-Way AUTOFEED lets you clean drains better and faster than ever before - keeps hands off cable and gives you total control to completely work through blockages and retrieve obstructions. The K-45 is fully variable speed to give you complete control in every situation.