Specifications:- Grommet Type: #2- Inner Diameter(Hole Size After Setting): 3/8"" (10 mm)- Outer Diameter(Top of Grommet): 3/4"" (19 mm)- Height: 1/4"" (6 mm)- Material: Iron with nickel finish- Net Weight: 1.37 Lbs (0.62 kg). Package Contents:- 1000x Grommets. Notice: - Washers are Not included, please prepare them before using.- As the grommets size varies, please check your dies and the specification above carefully for best match.