Two brush combo kit, fits all cordless drills and impact drivers. Durable high quality nylon bristles are great for scrubbing and cleaning fiberglass, porcelain, linoleum, tile and grout. Brushes have a quick change shaft which will allow it to fit into your impact driver or cordless drill. This is the perfect kit for bathroom cleaning, you will be able to clean grout lines with ease with the flat brush. Tough to reach corners can be tackled in minutes with our corner brush. You will no longer have to spend hours hand scrubbing when you have the power of your drill and our drill brushes to get the job done faster and better. Drill NOT included. -Drill Brush Combo Brush kit works great on Fiberglass Tubs, Shower Stalls, Sinks, and all Bathroom Tile. -One 4inch yellow flat brush and one 3.5 inch original drillbrush is included. -1/4 inch quick change shafts fits most drills and drivers -These brushes also work great on baseboards, flooring and Kitchen surfaces. -Durable nylon bristles. Medium stiffness for general purpose scrubbing/cleaning. -All Drillbrush Products have a 90 day no questions asked Money back Guarantee. 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.