I hope you buy everything because you like it, not because it is cheap. If you care about quality, respect the price. If what you want is cheap, accept the quality. Features: 1. These hex nuts are made of zinc plated carbon steel material, which provides strength and zinc cover offers good corrosion resistance. 2. Hexagonal shape has 6 sides that ves good granularity of angles for tool to approach from. 3. These hex nuts will be great replacement for industrial and construction fasteners. 4. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. 5. Used to fit bolts, studs or machine screws for fastening two parts together to make them one piece. Specification: Condition: 100% New Product material: carbon steel Surface treatment: galvanized Quantity: 10pcs Type: M6 * 18, M6 * 25, M6 * 30 (optional) Package list: 10 * Standoff I hope you buy everything because you like it, not because it is cheap. If you care about quality, respect the price. If what you want is cheap, accept the quality. Hexagonal shape has 6 sides that gives a good granularity of angles for a tool to approach from. These hex nuts are made of zinc plated carbon steel material, which provides strength and zinc cover offers good corrosion resistance. These hex nuts will be great replacement for industrial and construction fasteners. Used to fit bolts, studs or machine screws for fastening two parts together to make them one piece. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry.