This product is a foam insulation board washer, made of solid materials, safe and durable. It can last for a long time without being easily . The product is a practical foam board load washer that can bring you more convenience, allowing you to have comfortable experience. Features -Color:Silver -Material:Zinc alloy -Size:3.50X3.50X0.40cm/1.38X1.38X0.16in -Provides a secure and firm hold on the insulation panel, ensuring great efficiency in insulation. -The sturdy zinc alloy material used in these insulated board washers ensures and reliable performance. -These foam board load washers are easy to install, making them a practical choice for both professional contractors and diy enthusiasts. -Suitable for a wide range of insulation projects, including construction and renovation, these foam board replacement washers offer versatility and convenience. - workmanship, reasonable structure, professional and practical, can bring you convenience. Package list: 200 x washers