Feature:1. MULTIPLE SIZES: Includes 600pcs fiber washers in many different sizes to meet various usage and replacement needs.2. HIGH PERFORMANCE: Paper fiber has good elasticity, mechanical strength and insulation, wear, corrosion and heat resistance.3. WIDE APPLICATION: These flat sealing washers can be used for dry wall, fencing, mounting fixtures and sheet metal etc.4. WITH PLASTIC BOX: All fiber gaskets are packaged in labeled plastic box, which is convenient for sorting and selection.5. GOOD SEALING: These insulating gaskets have flat surfaces, with tight connection, providing good sealing.Specification:Item Type: Flat Washer AssortmentMaterial: Alloy Steel + FiberColor: RedQuantity: 600PCSUses: Suitable for plasterboard, fences, mounting fixtures and sheet metal, etc..Package List:600 x Flat Washers