Overflow Prevention: This bathtub control knob is designed to prevent water from overflowing from your bathtub, helping to protect your bathroom from potential water damage and maintain a safe bathing environment. For Easy Installation: Featuring a simple screw-on design, this rotary knob can be quickly installed without special tools, making it perfect for DIY bathroom upgrades and regular cleaning maintenance. Premium Chrome Finish: With its beautiful chrome plating, this plastic bathtub knob adds a modern and stylish touch to your bathroom decor while providing long-lasting performance and easy maintenance. Ergonomic Round Design: The round shape with serrated edges provides a comfortable grip and smooth rotation, making it easy to control the water flow even with wet hands while bathing. Accurate Dimensions: Measuring 75mm in diameter, this bathtub control knob fits standard general bathtub overflows and provides reliable performance for everyday use