- Product Dimensions: Head Diameter: 25mm (0.98 inches); Thread Length: 16mm (0.63 inches); Thread Diameter: 4mm (0.16 inches). - Durable Construction: Crafted from high-quality plastic and metal, these replacement knobs are designed for longevity. The metal bolts ensure strength and resistance to wear and corrosion, guaranteeing reliable performance over time. - User-Friendly Design: The star-shaped knobs allow for easy tightening and loosening without the need for extra tools. This feature simplifies adjustments, making your tasks more efficient. - Versatile Applications: Ideal for use in various settings, these knobs are compatible with lathe machines, mechanical equipment, and industrial instruments, making them essential for both professional and DIY projects. These knobs not only enhance functionality but also provide a sturdy, reliable solution for your equipment needs. Their robust materials and user-friendly design ensure that you can operate your machinery with confidence and ease.