Hayward SP1091LX Dyna-Skim Skimmer with Accessory Kit for Above Ground Pools has been an industry standard for more than 30 years. The Dyna-Skim skimmers have been redesigned to match the needs of today's above ground pools while remaining applicable for use on existing pool models. Skim-Vacs have revolutionized the process of vacuuming pools. By utilizing the skimmer basket instead of the pump strainer basket, they need to turn the pump on and off (possibly having to re-prime vacuum hose) has been eliminated. Simply attach the appropriate Skim-Vac SP11041 to the vacuum hose. Locate over the skimmer basket and begin vacuuming. Hayward SP1091LX Dyna-Skim Includes: SP1023, SP1419D, 2 Hose Adapters and SP11041 Skim Vac.