【Upgraded Non-breakable Fiberglass】 This thermoset composite plastic material is widely used in building materials. Our reinforced steel manhole covers has anti-corrosion, lightweight and sturdy properties that can work for many years 【Non-slip Cross-panel Surface】This square manhole cover lid has cross pattern on surface to anti-slip when you use on pavement 【Affordable Outdoor Basin Cover】Reinforced steel in our cover that can load up to 1.5t and embedded install on the ground.Kids can feel free to bike on our sturdy Sump Basin Cover lid in your yard anywhere,lawn,garden,yard,pavement etc 【Multi-purpose Replacement Lid】Nanotela round replacement covers can be used on various outdoor wells, such as valve wells, irrigation wells, cable wells, sump basin,etc 【High-quality Customer Service】Although we have reinforced the packaging of the product, the material may still be damaged during long-distance transportation. To meet your needs, please use the platform return and exchange service reasonably or contact us in a timely manner Natotela 20 inch Round Manhole Cover, Fiberglass Recessed Solid Top Cover,Replacement FRP Septic Tank Lid, Septic Tank Cover and Base for yard,Non-slip Reinforced Sewage Basin Cover, Black