Bakelite Material: The surface of the ball knob is made of high-quality bakelite, offering excellent insulation properties, durability, corrosion resistance, and high temperature resistance. Spherical Design: The bakelite ball features a copper thread. The spherical shape ensures stable force application during installation, and the embedded thread provides secure fastening. Perfect Accessory: The black glossy ball knob has a sturdy and durable design, making it a reliable accessory for various equipment and machinery. Seamless Installation: Installation is simple and requires no tools. The threaded ball knob can be tightened by hand quickly. Wide Application: Suitable for use in vending machines, lawn mowers, tractors, fitness equipment, machinery, valves, mechanical appliances, instruments, food processing equipment, teapot handles, and industrial equipment.