Yescom 1000pcs #2 3/8" Grommet Machine Grommets and Washers Brass Eyelet Die for Posters Tags Signs Bags 1000 Grommets + 1000 Washers #2 ( 3/8") Size Made of Iron with Brass Finish Hole Size After Setting=3/8"(9.5mm) Flange Diameter (Top of Grommet)=5/7"(18mm)