400pcs Stainless Steel Washers This kit contains flat washers. Great kit for the home or automotive. Washers are used with nuts and bolts and provide a greater bearing surface to prevent the nut or bolt head tearing through the fastened material. Lock washers resist loosening through vibration . Feature - Color: Silver - Material: Stainless steel - Package Size: 12.5x6.5x2.5cm - Assortment of quality washers for home, automotive, and shop use - Stainless steel with rust resistant galvanized finish to ensure long time use - Includes organizing case to store tools without risk of loss and damage - Suitable for mounting electronics, machinery, car models, model aircraft and other supplies Warm Tip: Dear buyer, Due to lighting effect, monitor's brightness, manual measurement and etc, there could be some slight differences in the color and size between the photo and the actual item. Sincerely hope that you can understand Thank you Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.