GH Grommet Insert Plug (10/Bag)

1/2 in grommet used in the reservoir drain that is used with AeroFlo? 20/30. The 1 in grommet is used in the growing chamber laser sprayline on all AeroFlo? systems. The 1-1/4 in grommet is used for the growing chamber drain overflow tube grommet in all AeroFlo? systems.