... 2 working:Manual 3 can punching at fabries,canvas,banners,posters,sailcloth,flxible material Steel manual single punching machine for ... .Application:Fix grommets onto pieces such as fabries, Canvas, banners, posters, Sailcloth, flexible materials, etc.Widely used in Advertisement, Sign, ... rgommeting: the grommets may be damaged to waste easily by andy deviate from the aimming way ,also may be scraped ...