Usually the types of grommet used on clothing material consist of plastic and are held in place using a grommet machine. The types of materials and items that you can find grommets include stuff like belts and clothes. Even though they are usually plastic, they can also consist of metal and other sturdy materials.These alternatives are eyelets and come in black and white colors in addition to the nickel and brass. Eyelets are made from aluminum. They will not corrode regardless of moisture. In order to use them, you also need to buy washers. The dies are can be spring loaded or tapered to hold the sed grommet machine in place.. You can purchase stainless steel dies, cutter dies, or plastic cutter and dies. With setting dies, you need to know what you are going to use it for and how you are going to use it. They even have extra large dies that are used on curtain rods. Dies are high carbon steel. They are heat-treated and last a long time. Used grommet machine is a very functional item that everyone who is interested in plugging buttons should consider buying. It is a high quality item that any person can utilize. Just take precautions when using the machine and pay attention to the different types of dies.