Heyous 100PCS 28mm Diameter Silver Stainless Steel Washer for Fastener Fixing and Backplate Installation

["Material: Made from high-quality stainless steel, with smooth, burr-free edges, corrosion-resistant, resistant to deformation, and robust and durable.","Features: The foam board washers feature a central groove for securing screws (screws not included), whilst the reverse side is designed with a raised section for insertion into the surface of the backing plate.","Installation: Each washer has a central hole for a screw and a raised reverse side (screws not included), allowing it to be securely positioned on metal, wood or plastic surfaces, making furniture repairs, craft assembly and DIY maintenance simple and efficient.","Applications: Used for securing and installing foam boards, back panels and similar items. Suitable for use in a wide range of sectors, including home renovation, schools, hotels, apartments, infrastructure assembly and construction.","Packaging: You will receive 100 stainless steel washers, sufficient to meet your daily needs and for replacement purposes."]