Detailed Product Description Brass Washer:internal diameter:1mm~100mmoutside diameter:3mm~500mmthickness: 0.1mm~6mm Material: carbon steel, mild steel,aluminum, copper, stainless steelFinish: black oxide, zinc plated (white / blue /yellow),hot dip galvanized, nickel platedPacking: bulk or small packing according to customer's instructions Standardized parts and componentsPrompt delivery