Product description Inner diameter: approx. 6 mm Outside diameter: 10.5 mm Barrel length: 4.3 mm Material: brass Package contents: 200 x eyelets 1 x punch 1 x base 1 x install tool 1 x storage box 1. The pack contains 200 eyelet tool sets in four colors: eyelets silver, eyelets gold, eyelets black and eyelets bronze, 200 eyelets with washers and with 3 pieces grommet tool set including a base, a punch and hole punch, give you enough quantity unlimited possibilities. 2. These tarpaulin eyelets are ideal for leather, denim, paper / cardboard, canvas, fabric, for handicrafts, decorating and repairing curtains, shoes, braids, belts, bags, clothing, canvas, tarpaulins, tents, awnings, canvas, Handbags, curtains, jackets, awnings. 3. Handicrafts eyelets are made of high quality copper, are shiny, sturdy and durable, easier to work with due to the softer material, help you repair damaged straps and leather crafts. 4. The cutting edges of these punching dies allow you to easily punch through several layers of fabric, offer clean and precise holes, with knurled bodies give you a secure, non-slip grip. 5. The metal eyelets 6mm are neatly separated in 4 different colors in the transparent box with compartments so that you can quickly and easily find and take the eyelets you want.