Practical set: Includes 200 insulation plate washers with an inner diameter of 0.58 cm and an outer diameter of 3.5 cm, compatible with most plasterboards available on the market. The quantity provided meets a variety of application needs. High-quality material: Washers are constructed from premium galvanized iron, offering durability and resistance to rust and deformation. These stainless steel washers provide excellent performance in terms of earthquake resistance, weather resistance, moisture resistance, temperature resistance, and corrosion protection. Suitable for use with various wall materials. Unique design: Insulation plates feature an optimized design that increases surface contact with the wall, enhancing load capacity and pressure resistance. This significantly reduces the risk of surface peeling or damage. The insulation plates deliver reliable wall protection and are ideal for securing back walls and insulation panels to common floor and wall substrates. Areas of application: Washers are suitable for use with multiple wall materials, including thermal insulation boards, tile backwalls, plasterboard, composite panels, and extruded panels. They can also be used to directly attach building materials to frames, providing secure and easy support for mounting backboards and insulation panels on floors or walls. Easy installation: Once secured with screws, the insulating discs remain firmly fixed to the surface, with the disc edges sitting flush with the panel surface. The perforated design of the mounting discs allows adhesives or mortar to bond effectively, minimizing the risk of surface detachment or damage.