Features: Made of 304 stainless steel, it is corrosion-resistant, not easy to rust, and sturdy and durable. No sharply edges, no burrs, can tighten well. These corrosion resistant nuts are designed for easy hand twist tightening, eliminating the need for tools. Crafted with precisions, our wing nuts feature cleanly and deeply cut thread that ensure a secure fit without slipping or wearing down. Suitable for a wide ranges of applications, these wing nuts are great for individuals in industrial manufacturing, construction, DIY projects, and more. Whether you're fastening clamps, adjusting machinerys, or installing furniture, these nuts offer reliable performances and convenience. Use them in various scenarios, such as fast positioning clamps, hardware lighting installations, or even musical instrument repairs. These nuts are designed for frequent adjustments and will withstands the tests of time. Specifications: Material: 304 stainless steel Inner diameter: 3mm(0.12inch)/4mm(0.16inch)/5mm(0.20inch)/6mm(0.24inch)/8mm(0.31inch)/10mm(0.39inch)/12mm(0.47inch) Package Includes: 20pcs Wing Nuts note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.