Banner eyelet machine application: Fabric, Canvas, Banner, Poster, Sailcloth, Flexible materials, etc. Quality self-piercing grommets need to be supported by quality tooling and attaching machines. To cut the hole and sets the grommet in one operation. It's easy to use, and the extra long handle gives you the leverage you need to punch through the thickest banner material. The adjustable stop screw gives you just the right amount of pressure to close the grommet assembly.