Our kit includes three different replaceable brush heads and a long reach Drillbrush extension. This extension along with all of the all of the brushes feature quarter inch quick change connections on all pieces to make your job even easier. Quickly swap out and change all of your brushes with or without the included extension. The Drillbrush Power Scrubber brand is the industry standard for drill powered cleaning tools. Established in 2007, we have been designing and innovating brushes based on feedback and demand from our valued customers. Our brushes are professional quality and have been tested and approved by commercial cleaners, marinas, detail shops, and others industry "hands on, daily user" reviewers to be the absolute best solution for a wide variety of cleaning and scrubbing tasks. Always look for the "Drillbrush Power Scrubber" logo to insure you are buying an authentic Drillbrush from the leader in drill powered cleaning brushes. Drillbrush was established in 2007 and continues to offer reliable, professional quality cleaning products. 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 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, above and in-ground pools A MINI version of the Original, and a 2-inch diameter, long bristle, brush are included to handle small details, crevices, and hard-to-reach areas. Use the round flat 4-inch and 5-inch brushes for larger surface areas on decks or vinyl pool liners. Rinse after use to remove chlorine Do you need to get into tight spaces or hard-to-reach areas? Included in the kit is a detachable, extended reach, eight (8) inch extension (for use