3.Works with most 1-1/4" post poles (not included). Use it also as a corner brush to clean those dirty corners. A great addition to your pool maintenance kit. 4. Works as a in concrete and gunite pools. Do not use with vinyl pool liners. 2. Effortlessly work on fighting and cleaning stubborn stains, steps, stairs, pool perimeter and pathways. 45 degree handle angle makes it easy to glide and clean underwater. 1.Unlike other brushes on the market that only one day, the pool cleaning brush is a small, sturdy type that tackles those hard to reach places to provide you with a finish. 5. Where ordinary brushes can't do it: you can clean the most stubborn algae deposits quickly and easily, and it is easy to clean the corners of the pool.