THE AQUABROOM BY BESTWAY IS A GREAT WAY TO REMOVE HARD TO REACH ALGAE AND GRIME. THE CURVED BRUSH HAS STRONG AND DURABLE BRISTLES WHICH MAKES IT EASY TO CLEAN CORNERS AND KEEP YOUR POOL SPARKLING CLEAR ALL SEASON LONG. IT IS COMPATIBLE WITH POOL CLEANING POLES THAT ARE 1.2 IN (30 MM) (INNER DIAMETER). POLES SOLD SEPARATELY.