• Threaded inserts made of high-quality carbon steel with blue and white zinc coating • Offer high hardness, wear and oxidation resistance, and excellent durability • The set includes 130 insert nuts in 12 different sizes: M6 x 10 mm, M6 x 13 mm, M6 x 15 mm, M6 x 17 mm, M6 x 20 mm, M6 x 25 mm, M8 x 15 mm, M8 x 17 mm, M8 x 20 mm, M8 x 25 mm, M10 x 20 mm, and M10 x 25 mm • Reliable design with unique external threading that ensures secure locking and resistance to loosening from torsion or vibrations • Precise size, deep threading, and even tooth distribution for easy installation and strong pull-out resistance • Practical packaging in a high-quality transparent box with 12 compartments for efficient organization • Ideal for modern furniture combinations such as furniture, drawers, and cabinets • Reinforce the structure and quality of furniture connections and are easily installed with a hex key