Grommet Kit: Includes 100 pcs grommet grommet kit (with 100 grommets and washer, individually packed in PE bag), punch tool and set tool, all in one damage-free plastic box. Copper Grommets: Made of quality cupronickel and electroplated on the surface, with super corrosion resistance and shiny appearance, easy to rust. Easy to install: Complete grommet punch kit makes installation easier. First use the punch tool to punch a hole in the tarp, then take the eyelet kit, then use the tool attached to fix the eyelet kit well. Wide range of Uses: The grommet kit is suitable for canvas, tarpaulins, tents, curtains, backpacks, leather crafts, repair and decoration. Size: The inside diameter of these copper grommets is approx. 1/2 inch, outer diameter is 5/6 inch, height is 1/5 inch, great accessories for various craft projects.