General description Drill Brush Attachment Scrubber Cleaning Kit includes 4 different sizes of brushes designed for effective cleaning of various surfaces such as tiles, grouts, floors, cars, rugs, bathrooms, and showers. Made from high-quality polypropylene, these brushes feature durable nylon bristles that are stiff enough to tackle tough cleaning jobs without scratching surfaces. Technical specifications Material: Polypropylene (PP) Brush sizes: 2 inch, 3.5 inch, 4 inch, and 5 inch Connector: 1/4 inch steel shank quick connector Installation Simply slide the 1/4 inch steel shank quick connector into your drill and tighten to secure. Usage For best results, wash the surface with water followed by detergent or soap. Use low torque on your drill; no need for excessive pressure as the brushes are designed to do the work. Always test on a small area first to ensure compatibility with the surface. Other information To clean the brushes, remove them from the drill, rinse with lukewarm