Features: • Ideal for Making Posters, Tags, Bags, Curtains, Belts, Dresses, Shoes, etc. • 1000 Grommets + 1000 Washers • Made of Iron with Brass Finish • #4 (1/2") Size • Hole Size After Setting = 0.472" (Approximately 1/2" = 12mm) • Flange Diameter (Top of Grommet) = 0.866" (22mm) • Under Flange Height = 0.276" (7mm) • Package includes 1000 Grommets and 1000 Washers.Notice: 1. Grommets are compatible with our 25GRM001-GENONE grommet machine. 2. As grommet machines use different sizes of dies, please make sure this grommet size fits your machine before purchase.