Multiple Sizes: With the purchase of this product, you will get a total of 340 star washers in 7 different sizes (M3/M4/M5/M6/M8/M10/M12), a wide range of sizes and abundant quantity, enough for your daily use. High-Quality Material: The star washers are made of high-quality 65 manganese with a galvanized surface, which is rust and corrosion resistant, hardness and robustness, making them excellent washers that can be used for a long time. Easy to Store: The star washers are stored in a transparent storage box with compartments of different sizes for clean and orderly storage of different washers. The box lid is labeled to make it easy to choose the right washer. Function: Starlock snap fasteners are suitable for applications where a fast, permanent, and effective joining method is required to hold common shafts made of steel, non-ferrous metals, and plastics. Threading and slotting operations are eliminated, facilitating quick assembly and secure positioning. Applications: Widely used in automotive, medical, household, toys, construction, electrical, agriculture, farming, air conditioning equipment, crafts, household appliances, marine assembly, braking systems, office equipment, computers, architecture, and more.