Sink Drain Upgrade: Elevate your sink's functionality with our brass pop-up bolt, featuring a spring mechanism that ensures effortless operation. Spring Mechanism & Threaded Top: The combination of a spring mechanism and threaded top allows for easy tightening and removal, making maintenance a breeze. Lightweight Durable: Designed with durability in mind, this bolt is both lightweight and sturdy, perfect for daily use in any bathroom setting. Corrosion-resistant: Constructed from corrosion-resistant brass, our bolt maintains its integrity over time, resisting wear and tear caused by moisture. Easy Tightening: The threaded top enables quick installation, streamlining the process of repairing or upgrading your sink drain system. Experience the convenience of our sink drain upgrade bolt. This brass masterpiece, equipped with a spring mechanism and threaded top, ensures that your sink functions smoothly while remaining corrosion-resistant, offering a hassle-free solution for your home improvement needs.