●The grommet kit contains 100 sets of eyelets, 1 base, 1 punch, and 1 install tool. ●Grommets Size (approx): 10mm/0.4" inside diameter, 17mm/0.67" outside diameter. ●Made of copper material and electroplated finished, strong and durable. With a clear box, convenient for storing small grommets. ●Get what you need in 1 set, easy to set the grommets in place with the hole punch and setting die. ●Perfect Tools for repairing and decoration, suitable for belts, tents, shoes, clothing, curtains, handbags, leather, and DIY crafts.