Ideal For Big Pools. Nylon Bristle Which Is A Resilient Material And Its Soft Enough Not Too Harm Your Pools Surface. Its The Most Appropriate Type Of Brush For Frequent Brushing. Curved Edges Are Ideal For Those Hard To Reach Places. Covers A Lot Of Pool Surface In One Brush Stroke. Prevent Algae Build Up It Prevents Algae Spores From Attaching To The Surface. Bolt On Or Quick Connect.