The Kalei insert nut set includes 100 high-quality insert nuts made of electro-galvanized steel, known for their durability and corrosion resistance. With a thread type of M4 and an outer diameter of 4 millimeters, these nuts are ideal for a variety of applications in the construction and mechanical engineering industries. The length of 100 millimeters allows for flexible use in different projects. The insert nuts comply with the DIN standard M4, making them compatible with common screw systems. The electro-galvanization provides an additional protective layer that extends the lifespan of the nuts and protects them from environmental influences. This set is a practical solution for professionals and DIY enthusiasts who value quality and reliability. The combination of robust material and precise workmanship makes the Kalei insert nuts an excellent choice for anyone needing a secure and durable connection.