【zinc plated carbon steel】These coupling nuts are made of zinc plated carbon steel with high strength and good corrosion resistance. 【hexagonal】Nuts adopted hex shape which has 6 sides that gives a good granularity of angles for a tool to approach from. 【good fasten performance】Used to fit bolts, studs or machine screws for fastening two parts together to make them one piece. 【wide applications】These hex long rod nuts can be widely used for the home and office, communication equipment, ship assembly and other machinery industry. Material: carbon steel Surface treatment: galvanized Product size: M10 * 60 * 14 (mm) Weight: 80g/2.8oz Quantity: 5 pieces Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thanks!