Product Includes: You get 100 PCS washers for nuts and bolts and screws of similar diameters, enough for your daily useDurable & Stable: Our washers are made of alloy steel for excellent corrosion resistance in harsh environments such as high temperatures, cold weather and high humidity areas to ensure long-lasting durabilityWide Application: Suitable for a variety of uses including factories, kitchens, stores, maintenance, construction and furniture repair, our flat washers can be used to secure bolts with diameters smaller than the washer's hole diameter, and are prefect for both professional use and DIY projectsProduct Size: Inner diameter 1/4 inch, outer diameter 5/8 inch, thickness 0.06 inch prefect for sheet metal and wet environments with high corrosion resistanceProduct Function: These washers are used to spread the load of threaded bolts, screws and nuts, providing a stable, smooth, high-quality load-bearing surface that is highly compatible with screws, nuts and bolts of the same size