【Versatile Plastic Flat Washers】You will receive 100 pieces of 46mm diameter plastic flat washers, a sufficient quantity for daily use, ideal for a wide range of applications. 【Durable Design for Insulation】Our plastic insulation washers offer excellent load-bearing capacity and good shock absorption. They are specifically designed for fixing foam insulation boards, ensuring effective and durable insulation for your construction and renovation projects. 【Easy Installation】With a practical 46mm diameter and a 5mm center hole, these plastic flat washers are designed for quick and easy installation. They fit over your screws or nails for a secure hold and require no special tools for installation or removal. 【High-Quality Polypropylene】Made of high-quality polypropylene, our plastic flat washers are designed to withstand extreme temperature conditions. Their resistance to deformation and good insulation make them an ideal choice for all your durable fastening needs. 【Universal Application for Foam Boards】These washers are ideal for holding and securing expanded polystyrene sheets, extruded polystyrene, and other types of foam insulation boards. Their versatility and reliability make them a must-have for any project requiring effective insulation.