This four piece power scrub brush kit is designed for use with most cordless drills (drill 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. Pool Brush for vinyl liners, Hot Tubs and Spas, pool covers, walls and deck. Keep deck surfaces free of slippery algae and scum buildup. Perfect for above ground or in ground pools and fixed or portable spas and hot tubs. Use together with a quality pool skimmer and pool vacuum for a complete pool maintenance kit. The swimming pool and Spa scrub brush kit features 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. 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.