• Set of 12 M6×20mm star knob screws, ideal for securing parts on machines and equipment. • Ergonomic design with strong grip, easy to install, remove, and adjust without the need for additional tools. • Made with high-quality materials: plastic and carbon steel, resistant to high temperatures and corrosion. • Deep and strong thread, burr-free, ensuring durability and strength. • Perfect for machinery, instrumentation, and industrial equipment, ideal for replacing old or damaged handles. • Specifications: Thread diameter: 6 mm, Thread length: 20 mm, Total length: 36.6 mm. • Color: Black.