Hayward SP11054 Skim Vac Above-Ground Pool Skimmer Skimmer vacuum plate with 1-1/4 and 1-1/2-inch combo hose adapter Fits Hayward swimming pool skimmer SP1090, 1091 and 1092, top cover styles models By utilizing the skimmer basket instead of the pump strainer basket, the need to turn the pump on and off is eliminated Simply attach the appropriate Skim-Vac to the vacuum hose located over the skimmer basket and begin vacuuming Measures 6-inch diameter