Generous assortment of essential hardware items in convenient re-sealable organizer case;Includes through-hole grommets in 11 sizes and 7 sizes solid rubber plugs (see description for list);Grommets protect electrical wiring, fuel, water & hydraulic lines when passed through metal walls;Rubber plugs seal holes, add finished look to your application; all oil-resistant Nitrile rubber;Outstanding value - 125 quality hardware items for price of half-dozen in hardware store!