This Bestway Flowclear filter pump is a replacement part for 800 gal. filter pumps as well as Power Steel and Steel Pro Max round above ground pools that come with an 800 gal. filter pump. This pump works its magic by circulating water out of the pool, through a Type II filter cartridge and back again. The complete set includes everything you need to connect the pump to your pool and get the filtration system up and running.