PART NUMBER TUBING SIZE TUBING GAUGE TUBING TYPE INTERNAL THREAD 27409-0062-5700 5/8" 16/18 GA ROUND/SQUARE 10-24 27409-0075-5700 3/4" 16/18 GA ROUND/SQUARE 1/4-20 27409-0875-5700 7/8" 16/18 GA ROUND/SQUARE 1/4-20 27409-0101-5700 1" 20/22 GA ROUND/SQUARE 1/4-20