Zodiac G9 1-1/2-Inch NPTF by 3/4-Inch NPTM Coupling Replacement Coupling replacement Fits Zodiac Polaris pool cleaner models 380, 280, 180 Also fits Zodiac Polaris miscellaneous pool cleaner Measures 1-1/2-Inches NPTF by 3/4-Inches NPTM