The spiral tension pins made of spring steel by Toolcraft are an essential accessory for model building. These high-quality tension pins are made from robust spring steel, giving them high strength and durability. With a length of 70 millimeters, they are ideal for various applications in model building, particularly for securely fastening and stabilizing components. The package includes 25 pieces, providing enough material for multiple projects. The spiral shape of the tension pins ensures optimal holding power and prevents unwanted loosening of the connection. These tension pins comply with the ISO 8750 standard, making them standardized in their regular design. They are a practical tool for hobbyists and professionals who value precision and quality. Whether building models or making repairs, Toolcraft's spiral tension pins offer a reliable solution for your model building needs.