High-quality brass material is not easy to rust Suitable for most standard accessories Spring mechanism easy to up the thread Diameter: 6.6cm/3.52cm Seal ring: 3.95cm/3.7cm Color: silver/silver+golden Material: zinc alloy, brass Package Included: 1 bolt +1 button Notes: 1. Please allowed 1-3mm differences due to manual measurement, thank you for your understanding! 2. Due to the difference between different monitors, please understand that the picture may not reflect the actual color of the item. 【Eco-Friendly and Sustainable】Made with environmentally conscious practices, this product is eco-friendly and contributes to sustainability efforts. It is designed to minimize waste and reduce environmental impact. 【Versatile Functionality】This product is multifunctional and can be used for a variety of tasks, providing you with the flexibility and convenience needed to handle multiple uses with a single tool. 【User-Friendly Design】Ergonomically designed for ease of use, this product offers intuitive controls and a comfortable grip, making it perfect for both beginners and experienced users. 【Exceptional Performance】Engineered for high efficiency and effectiveness, this product delivers outstanding results every time. Its advanced features ensure consistent performance, making it a reliable choice for your needs 【High-Quality Materials】Crafted from premium, durable materials to ensure longevity and superior performance. Each product is meticulously tested to meet high standards of quality and safety.