Premium Material: The washer is made of excellent stainless steel material, rust and corrosion resistant, not easy to break, strong, and has high strength and durability even in high temperature or high humidity environments. Easy to Use: Flat washers can effectively disperse the pressure generated by the fastener head, quickly disperse the force on the surface of the bolt and nut, and protect the parts from damage by increasing the contact area or reducing friction and preventing leakage, insulating, preventing loosening, etc. Easy Storage: All stainless steel discs are stored in a transparent and sturdy storage box with compartments. The metal discs are stored separately, well organized, easy to carry and find. There is no confusion during transportation and it is convenient to use. Wide Application: Widely used in electrical connections, household appliances, commercial equipment, furniture maintenance, mechanical equipment, automobile maintenance, electrical connections, ships,