Professional 17.5 in. Swimming Pool Brush Head with Rounded Ends - Features a heavy-duty aluminum back for effective wall cleaning and 7 rows of premium nylon bristles for deep scrubbing. Designed with EZ Clips for quick and secure attachment to standard poles, making pool maintenance fast and efficient. Round ends pool brush head - two ends with round bristles ideal for cleaning pool corners, curved area etc Enhanced and Curved Bristle Design to contact the pool bottom and walls as much as possible during cleaning process and 360-degree bristles Safe for pool liner - the smooth and round finishing edges assures safety to the pool liner, including vinyl pool liner