Poolmaster 18105 17 1/2" Aluminum Brush with Polypropylene Bristles. Poolmaster’s Essential Collection consists of the essential must-have products for customary pool and spa maintenance constructed with durable materials designed to keep your pool sparkling. Built with extra durability, Poolmaster’s 17-1/2″ Aluminum Brush with die-cast Aluminum back and handle is a great staple for use on any pool or spa surface, featuring 5 rows of durable Polypropylene bristles. Works with standard pool poles.