Our gypsum board load washers are designed to provide a secure and stable hold for gypsum boards and other insulation materials. Made from robust galvanized iron, these washers are resistant to tear and wear, making them suitable for long-term use. To install, simply place the washer over the fastener and tighten. These washers are ideal for use in constructing background walls and other insulation projects. Features -Color:Silver -Material:Galvanized iron -Size:3.50X3.50X0.30cm/1.38X1.38X0.12in - Inner diameter: 0.58cm; Outer diameter 3.5cm -Healthfriendly: keep from harmful chemicals, these washers are safe for use in sensitive environments such as children's rooms and medical facilities, ensuring user safety -Sturdy : made from galvanized iron, these washers are designed to withstand longterm use without deforming, even in humid conditions like kitchens and bathrooms -Effortless installation: these washers are easy to install without requiring professional skills, making them a convenient choice for diy enthusiasts -Secure fit: these washers are engineered to keep wall decoration materials securely in place, preventing them from falling off easily -Unique design: these washers address the issue of traditional wall decoration's design options, making them suitable for users looking to add a unique touch to their spaces Package list: 100 x gypsum board washer