The spring pins made of spring steel from Toolcraft are an essential accessory for model building. With a length of 4 millimeters, these high-quality pins provide a reliable and precise connection for various applications. Made from robust spring steel, they ensure high strength and durability, making them ideal for use in demanding projects. The package includes 1000 pieces, providing ample material for extensive work. These pins are particularly useful for securely fixing components and ensuring a stable construction. They are versatile and suitable for both hobbyists and professional model builders who value quality and reliability. The use of metal materials ensures optimal performance and ease of handling. With Toolcraft's spring pins, you are well-equipped to successfully execute your model building projects.