These grommets are ultra strong and they will help you tie down the waterproof canopy tarp easily and in a very steady and secure way.Tying it down is going to be simple and easyThis polyethylene tarp sheet has metal grommets every 24 inches and reinforced edges.Tarpco Safety has designed the ultimate weatherproof tarp coverThis heavy duty outdoor tarp sheet is built to cover and effectively protect small and large objects from all extreme weather conditions: Is it too sunny and warm outside? Is it windy? Is it snowing? boat, pool, roof, or outdoor furniture.