Spool and O-Ring Kit, Fits Brand ARO, For Use With Grainger Item Number 2G509, 2G511, 2G513, 2G515, 2G517, 2G519, 2G521, 2G525, 2G527, 2G529, 2G531, 2G533, 2G537, 2G541, 2G543, For Use With Mfr. Model Number E212FS, E212HM, E212HS, E212LM, E212LS, E212RS, E212TM, E252FS, E252HM, E252HS, E252LM, E252LS, E252TM, E512LM, E612LM