Hayward Skim-Master™ SP1070S 1 1/2" SKT White Inground Gunite Skimmer. Hayward in-ground pool skimmers are the preferred choice of professional pool builders. Engineered for residential and commercial applications, these large capacity skimmers are manufactured to Hayward's rigorous quality standards. Hayward skimmers come with multiple plumbing connections for easier installations. All Hayward skimmers are non-corrosive, non-conductive and virtually indestructible, no matter what Mother Nature dishes out.