Material: Made of bakelite, solid and durable, good toughness, strong anti-aging ability, nickel-plated screw surface, corrosion-resistant, easy to install and remove without any tools. Dimensions: M8 x 70 mm 3. Perfect star knobs: Using these star nuts on your mechanical projects can really give you a more comfortable grip. Besides, you can adjust your machine without scratching yourself. 4. Easy to use: This ergonomic plastic knob set allows easy adjustment and tightening with maximum control and flexibility without using additional tools. 5. Wide application: Suitable for fences, drill presses, lathes, routing jigs, fixtures, featherboards, working on mechanical equipment, instruments, furniture, etc. Widely used in various fields of industry and life, our star knob will be your ideal choice. : These star knobs feature high-quality bakelite handles that are sturdy, corrosion-resistant, and not easy to break, ensuring long-term use. Besides, they are thick enough to provide you with a solid and comfortable grip. Available for most types of machine tools, this kit will definitely meet all your daily needs. Specifications: Material: High-quality bakelite + nickel-plated. Size: M8 x 70mm Color: Black+Steel Package Contents: 2 x Star Knobs Note: 1. Please allow 1-5mm error due to manual measurement. Thanks for your understanding. 2. The color may slightly vary due to different monitors.