Hillman 10 X 1-1/2 In. Red Painted Head Self Piercing Sheeter Screw is a highly versatile sheet metal screw designed to securely attach metal, wood, fiberglass, and plastic materials. Featuring sharp threads, these screws effectively draw materials together to ensure a strong and reliable hold. Fully threaded with a sharp point, they provide excellent piercing capability for various applications, making them an essential fastener for both professional and DIY projects.