4 different sizes and medium stiffness Made of ultra durable and high quality PP (polypropylene), each bristle is stiff enough. Professional cleaning brush for tiles, grout, floor, car, carpet, bathroom, shower, exc . Shaping brushes for cleaning, these nylon bristles will not scratch, durable nylon bristles, drill bits not included 360 * STORAGE BRUSHES * SAVE TIME CLEAN FASTER - CLEAN THE BRUSHES THAT APPLY TO ANY CORDLESS DRILL - Turn your regular drill or impact wrench into a powerful cleaning tool in seconds. Finish tough cleaning jobs faster and with a deeper clean. Clean up dirt, scum, stains, water spots and years of nasty construction in record time FITS% 99 All Drill Bits Single 1/4 inch steel shank quick connector slides right into your bit, then just tighten. Note For best results, always wash the surface with water, then wash off any detergent or soap such as fabric or spray or apply a high-speed stain remover. SAVE TIME - CLEAN FASTER with the 4-Piece Brush Attachment Kit This 4-piece electric peeling brush kit is perfect for a variety of cleaning applications as it can clean almost anything. NOTE : Drill NOT included. We recommend that you test each drill brush on a small area before using it over the entire area. 4 in.Round brush Scrub a large area, lighter and more manageable than 5 inches 5 ' round brush Bigger brush, more convenient for large-scale cleaning 3.5 inch conical brush Clean corners and curved surfaces Small 2 inch round brush No more targeted cleaning, such as hard-to-reach areas The Drill Brush Kit is an all purpose cleaning kit for kitchens, bathrooms, showers, tubs, tiles, walls, stoves, sinks, marble, ceramic, narrow rugs , uprights, car tires, car seats and more. For your safety: 1. Always test on a small area first. 2. Please wear safety glasses or eye protection tools if cleaning materials come off during filming. 3. Use low torque on your drill. You don't need a lot of pressure, the brushes are in a good position to do the job. 4. To clean the brushes, remove them from the drill, rinse them with lukewarm water and let them dry.