Features:Versatile Application: These plastic flat washers are designed for a wide range of uses, including fixing and supporting rigid foam, bolts, screws, and foam board insulation. They are ideal for various repair projects.Excellent Insulation Properties: Crafted from polypropylene, these round flat plastic washers provide exceptional insulation and are abrasion resistant. They effectively prevent heat transfer, ensuring energy efficiency and reducing thermal conductivity.Load Spreading Design: The load spreading insulation board foam board washers feature a unique design that helps distribute the load evenly, preventing damage and extending the lifespan of the materials they support. Their durable thickness makes them ideal for heavy-duty applications.Superior Durability: These plastic washers are built to last. With their heavy-duty construction, they can withstand high levels of stress and pressure without deforming or breaking. You can trust them to provide reliable support and protection.Easy Installation: The plastic washers are user-friendly and can be easily installed with bolts, screws, or other fasteners. They offer a hassle-free solution for securing and reinforcing foam board insulation and other materials, saving you time and effort. Specifications:Material: PlasticSize: 45*45MM Choice 1: 100pcs * Plastic Flat Washers OR Choice 2: 200pcs * Plastic Flat Washers OR Choice 3: 500pcs * Plastic Flat Washers