- Upgrade your fastening solutions with our M3 to M20 External Thread Double Head Conversion Screw Size Reducer. This versatile set includes 1 to 5 pieces, allowing you to tackle various projects with ease. - Constructed from high-quality 304 stainless steel, these screws offer exceptional durability and corrosion resistance, ensuring long-lasting performance even in challenging environments. - Key Benefits: - Functionality: Convert different thread diameters seamlessly, making it easier to use various components together. - Compatibility: Designed to fit a wide range of applications, suitable for automotive, machinery, and DIY projects. - Size Range: With options from M3 to M20, you can find the perfect fit for your specific needs. - Practical Applications: - Automotive Repairs: Ideal for securing parts where different thread sizes are required, enhancing your vehicle's reliability. - Machinery Maintenance: Perfect for machinery that requires diverse screw sizes, ensuring efficient assembly and repair processes. - DIY Projects: A must-have for hobbyists and crafters, allowing for easy modifications and customizations in various projects. - Choose our M3 to M20 Conversion Screw Size Reducer for an efficient, reliable, and practical solution to your fastening needs.