Solid Structure -- The brush set is made of high-quality raw materials. the structure is firm. the hard bristles are firmly attached to the plastic block. and the overall brush head is not easy to deform and is durable. 7 Different Size -- There are seven kinds different sizes and shapes of brush heads. during use. you can replace them according to your specific needs. Precise & Durable -- A corrosion-resistant quick-change shaft on the brush is of precise size. You can install these brushes tightly on a cordless drill or percussion drill and will not fall off during use. Time-saving & Labor-saving -- With the high-speed rotating drill bit. it can quickly clean dead corners. scum. stains and dust. etc.. making your cleaning work more time-saving and labor-saving. Wide Application -- This electric brush head can be used for sink cleaning. carpet cleaning. bathroom cleaning. wood floor cleaning. etc. It has a wide range of applications.