5. These drywall screws are made of high quality carton steel, surface treated with black oxide, durable and strong, high in strength, non-deforming, anti-corrosion and anti-rust.
6. Drywall Wood Screws are Primarily Used for Installing Drywall in Houses, Buildings and Offices or Workplace, etc.
7.All pieces come in a durable transparent box, it can be reserved long time.