[#10 x 1Inch Roofing Screw] roofing screws are designed to fix thin-gauge metal plates under 2.4 mm to wooden structures. Composed of high-strength alloy steel to provide strong toughness. An additional magnetic-absorbing driver bit available. [Convenient to Use] The self-drilling point can reduce metal shaving. Galvanized ASD coarse thread with moderate corrosion resistance is applied to wood. Mainly used for most iron panel, steel plate, aluminum panel, wood, plastic sheet, composite board, etc. [EPDM Washer] The 1/2Inch(13.8 mm) rubber washers expand under pressure to form a durable weather-tight seal. And the suitable diameter tightly covers screw hole. [White Hex Head] The process of baking varnish provides superior corrosion resistance and exterior protection for 5/16inch hex head with high-torque drive when installed. Signal white matches popular roofing colors. [Warm Tips!] Since the coarse thread and small head of screw, it is not suitable for thick metal plate exceeding 2.4mm and the connection between the metal plates! Ensure holding angle to prevent sliding when use. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Colour:White Material:steel Package Contents: 300 * Roofing Screws 1 * bits