[Premium Material] The plumbing washers and seals are made of high-quality red steel paper fiber material, offering wear resistance, corrosion resistance, heat resistance, good insulation properties, and long-lasting durability. [Easy to Use] The flat outside tap washer provides excellent insulation performance, helps distribute load, prevents damage to surfaces being fixed, and insulates steel screws. [Easy to Store] Includes a compact, transparent, compartmented plastic storage case. All fiber washers are neatly packed in the box for convenient organization and storage. [Wide Applications] These fiber washers are suitable for various plumbing, electrical appliances, and electronics industry applications, serving as buffers or packers. [What You Will Get] You will receive 600 red steel paper fiber washers in 12 different sizes, meeting a variety of needs and providing ample supply for daily use. Color: Red Material: Red steel fiber Package Contents: 160 x 10x5.5x0.8mm washers 100 x 12x6.5x0.8mm washers 60 x 16x8x0.8mm washers 80 x 16x10x0.8mm washers 40 x 19x12x0.8mm washers 40 x 20x12x0.8mm washers 20 x 22.5x14x0.8mm washers 30 x 22x16x0.8mm washers 15 x 25.4x17.5x0.8mm washers 20 x 27x20x0.8mm washers 20 x 32x22x0.8mm washers 15 x 32x24x0.8mm washers 1 x Plastic box (20.5 x 10.5 x 3 cm) The package includes only the items listed above; other products are not included. Note: Lighting and display differences may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.