The spring pins made of spring steel by Toolcraft are an essential accessory for model building. With a length of 36 millimeters, they provide a robust and reliable solution for various applications. These spring pins are made from high-quality spring steel, ensuring their durability and strength. They are available in a convenient packaging unit of 100 pieces, making them ideal for extensive projects or regular use. The heavy-duty design of the spring pins ensures that they remain stable under load and provide a secure connection. Whether for building models, fastening components, or other crafting activities, these spring pins are versatile and offer a precise solution for your model building needs. The use of metal materials in their construction ensures high resistance and a long lifespan, making them a valuable addition to any toolset.