Material Carbon_steel, Gold, Steel, PEX, Plastic, Carbon Steel Drive System Cross Head Head Style Flat Head, Flat Head, Round Head Item Dimensions L x W x H 17 x 10 x 2.2 centimeters Exterior Finish Carbon Steel, Carbon Steel Point Style C Point Metal Type Carbon Steel Color Black Fastening Type Self-drilling, Self-tapping Screws See Less About This Item 【Premium Material】The self-drilling metal screws are made of exceptional carbon steel material with black surface color, which is strong, anti-rust and anti-corrosion even in humid environment, beautiful, practical and durable for long-term use. long term. 【Sharp Thread Design】Our wood screws have smooth thread surfaces, clear threads and no burrs. When installed on dowels, wood on wood, ceilings, etc., the screws have good fixing properties and are not easy to slip during installation. 【Easy to Store】The flat head screw plate is well packed and assorted in a plastic box, without worrying about damage or disorder, easy to carry, use