Yescom 1000 Package #4 15/32" Grommet Machine Grommets & Washers Brass Hand Press Tool Die Eyelet 1000 Grommets + 1000 Washers #4 ( 15/32") Size Hole Size After Setting=15/32"(12mm) Flange Diameter (Top of Grommet)=6/7"(22mm) Under Flange Height=1/4"(6.5mm)