The versatility of these plastic insulation washers allows them to be used across different types of foam boards and constructions. They can be applied in both new builds and renovations, providing a point for screws that secure insulation materials, ultimately supporting effective energy conservation. Features -Color:White -Material:Plastic -Size:4.50X4.50X0.50cm/1.77X1.77X0.20in -Factors: their plastic construction ensures degradation, making them a fastening solution -Dependable holding power: the effective fit of screws with these washers prevents slippage, ensuring that installations stay secure over time without failures -Versatile implementation: designed for use in construction, renovation, and furniture projects, these washers cater to a wide range of fastening needs -Commitment to quality: subjected to thorough quality testing, these washers provide performance, reliability, and durability for all types of users -Fit:White Plastic Washers are suitable for fixing and installing foam boards, rubber boards and other decorative materials Package list: 200pcs gasket