Package includes: 230 pieces wood screws, A total of 7 popular sizes, ideal for maintaining various facilities in the yard, home and garden. Material: All screws are made of carbon steel, Oxidized surface of the screws for strength and rust resistance. Easy to use: Self-drilling screws with neat, clear and burr-free threads, Good fastening properties when installing on wooden studs, lumber, ceilings, etc., and not easy to slip during installation. Wide application: These black screws easily pass through drywall and the countersunk head helps you screw them in easily. Mainly used for drywall in homes, buildings and offices, they can also be used for wooden furniture, repairs, fixing components and fixing structures. Convenient storage: Different sizes are individually placed in different compartments of the plastic box for easy storage and removal, helping you complete your work efficiently.