In time, when material is in contact with rain or humidity for a few months, it will cause erosion or rust. This can be installed with the sheet metal grommet cutting & setting dies set. Iron Material Grommets Our quality Micron (Iron) Grommets are available in sizes #12 and #15 for indoor/short term outdoor use grommets for an affordable short term usage fasteners for campaign signs or indoor birthday banners. The affordable pricing makes this particular grommet an option of choice.
