For those looking to mount items on drywall, concrete, or plaster walls, our stainless steel expansion screws with white plastic expansion tubes are the ideal choice. The screws are sturdy enough for added strength and durability, while the plastic tubes expand to provide a secure hold. This kit is ideal for hanging heavy items like mirrors, shelves, and picture frames. Features -Color:Black -Material:Stainless steel -Size:3.50X0.80X0.80cm/1.38X0.31X0.31in -Size:4.20X1.30X1.30cm/1.65X0.51X0.51in -Large thread: these anchors come with large threads, let them into thick drywall, and better reduce the risk of it being pulled out -Long-lasting: these fixing screws have high hardness, very , not easy to fade or deform for you to use rest assured -Large quantity: the generous pieces provides a generous supply of screws and anchors, ideal for extensive use in home improvement projects -Visually pleasing: the white plastic expansion tubes are designed to blend seamlessly with most wall colors, providing a clean and professional look -Effortless installation: these screws and anchors are easy to install, making them suitable for a wide range of wallmounting tasks Package list: screws anchors