This four piece power scrub brush kit is designed for use with most cordless drills. The Drill is NOT included. These brushes should cut your cleaning and scrubbing time in half or more compared to the rigorous effort involved in hand scrubbing. These power brushes also do a better job in maintaining around your pool and spa. See the Amazon reviews of all our Drillbrush products. The swimming pool and Spa scrub brush kit features our most popular power brush: The Original Drillbrush Power Scrubber multi-purpose and corner scrub brush (in blue). The Original is perfect for rounded corners in hot tubs, artificial ponds, and concrete pools. This power cleaning brush kit is the perfect addition to your existing pool cleaning equipment. Included are fourdifferent sizes and shapes of medium stiffness nylon power brushes for cleaning around your Pool and Spa. Use the round flat 4-inch and 5-inch brushes for larger surface areas on deck or liner. Rinse after use to remove chlorine. All of the brushes in the swimming pool and Spa scrub brush kit have rugged steel shafts and feature a quarter inch quick change end. This allows the brushes to fit in all cordless drills and impact drivers, and to be changed quickly to match your cleaning needs. All Drillbrush Products have a 90 day no questions asked return window. If you are not completely satisfied with our product we will issue a full refund or ship out a replacement at the buyer's request. Cordless Drill NOT included