The Plastic Insert Hole Plug End Cap Tube Insert is designed to provide a secure and clean finish for tubes with a diameter of 16mm. Crafted from durable black plastic, this end cap tube insert effectively seals off the ends of tubes, preventing dust, dirt, or debris from entering. It offers a convenient solution for protecting and enhancing the overall appearance of your tubes. The cap is easy to install, ensuring a snug fit that remains securely in place. Whether you're working on DIY projects, furniture assembly, or any other application that requires tube end covering, this Plastic Insert Hole Plug End Cap Tube Insert is a reliable choice.