Tarp Grabbers let you add a grommet wherever needed. These plastic grommets are up to 4 times stronger than brass grommets and once installed are permanently attached. These are so convenient and durable they can be used with heavy duty plastic sheeting from 10 mil up to 20 mil thick. • Easily Installed Grommets • Can be used with light-weight and heavy duty plastic • Sold 20 per pack