"【4-piece professional combination drill brush 】Choose the brush you want according to your needs, it can fit your different cleaning needs. -2 inch/3.5 inch/4 inch/5 inch, which with different shapes, sizes and stiffness. (DRILLING IS NOT INCLUDED) 【Excellent nylon bristles 】The drill brush attachment is made of high-quality nylon bristles, high chemical resistance and durability to remove all stains. Convenient to use and durable to use. The high-speed rotation of the drill combined with a high-quality bristle brush can clean dirt, scum, stains, water spots, and years of accumulated dust, cleanly and easily. 【Widely used 】Medium stiffness polypropylene bristles, the powerful scrub brush will not scratch. The durable scrub brush is widely used for indoor and outdoor cleaning, such as: bathroom, pool tile, flooring, brick, ceramic, marble, grout, car interior and exterior cleaning, car wheels, grease stains on garage floor, exterior the house wall, fence, handrail, etc. 【Robust