【Hard Bristle Cleaning Brush】Using ultra-fine PET bristles, much harder than a toothbrush, with an angled tip, the gap brush can reach deep into the crevices, the gap brush effortlessly removes dirt and grime in narrow spaces, leaving your home cleaner and more hygienic. [Tile Grout Brush] The flat brush head makes it easy to reach deep into the gaps and thoroughly clean corners such as sink edges and window crevices. A crevice cleaning brush can remove the most stubborn dirt from humidifiers, window nooks and even narrow nooks and crannies. Say goodbye to hidden dirt with this versatile tool. 【Practical and Reusable】 The window or sliding door track cleaning brush has great flexibility and wear resistance. After getting dirty, wash it with water to make it as clean as new. The hanging hole can be hung and takes up little space. Both ends are used to ensure effective dirt removal. Save time and effort: The cleaning brush reaches hard-to-reach places and effortlessly removes dirt from