For those working with board insulation, our galvanized iron washers are an essential component. These washers provide a secure hold, preventing the boards from shifting and ensuring a stable installation. Ideal for use in both residential and commercial settings, these washers are easy to install. Just place the washer over the fastener and tighten to secure the board in place, ensuring a installation. Features -Color:Silver -Material:Galvanized iron -Size:3.50X3.50X0.30cm/1.38X1.38X0.12in - Inner diameter: 0.58cm; Outer diameter 3.5cm -Safe for health: these washers contain no harmful substances, making them ideal for use in environments where health is a priority, such as children's rooms and healthcare facilities -Robust: crafted from galvanized iron, these washers are highly resistant to deformation, suitable for use in wet areas like kitchens and bathrooms -Simple to use: these washers are designed for easy installation without the need for professional assistance, suitable for diy home improvement projects -Secure and stable: these washers ensure that wall decoration materials stay firmly in place, addressing the issue of materials falling off easily -Design versatility: these washers provide a solution to the design options of traditional wall decorations, ideal for users seeking to personalize their decor Package list: 100 x gypsum board washer