Description: Protable Door Window Bristle Cleaning Brush Plastic Gap Brush Head Water Injection This gap brush can fit any bottle as the pictures shown below. It can effectively to clean window, door shoes, ceramic floor, ceramic wall, bowls and chopsticks or others. What you need is to prepare a bottle and fill water or some detergent inside then you can start to wash the item you need. PET bristle suits to clean dirts from the gap, such as the gap of door, window, shoses or bowls. You can control the water flow and it is really a nice tool to clean differernt stuffs.