The eyelets and grommets kit includes 120 sets 1/2 inch metal eyelets with 8 styles(1 grommet and 1 washer as a set. 8 styles: 4 colors with 2 different heights each, 15 sets per style), 4 pcs grommet tools (include 1 base + 1 punch + 1 install tool + 1 hammer), storage box. The eyelet tool is great ideas for decorating leather belt, tag, shoes These grommets eyelet measures . 1/2 inch (12mm) in inside diameter, 3/4 inches (19mm) in outside diameter. The leather grommet length are 0.16"(4mm) and 0.27"(7mm). Please understand that manual measurement may have 0.2mm error Our metal eyelets come in 2 heights, 0.16"(4mm) and 0.27"(7mm), the grommets can be used not only on thin cloth, but also on a little bit thicker materials such as leather! The 2 heights of eyelets for fabric are available in 4 colors - gold, silver, bronze and black, giving you more choices in your diy creations! Not only that Place the fabric to be perforated on the board (not included in the set), align the hole punch vertically with the position on the fabric where the hole needs to be punched, strike the punch with the hammer, punch the hole and then fix it on the base, cover the washer and setting tool, strike it again with the hammer to fix the grommet. The grommets for fabric can be used on fabric, leather, tarp, tent, canvas and so on. Rivets for fabric can repair and decorate many items, and enable the creation of items such as clothing, shoes, bags, tags, dog collars, wristbands and more. They are suitable for DIY enthusiasts. Color: As Shown Material: Metal Package Contents: 1*set eyelet tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.