Now easily drain your cooling system with this painless upgrade. This quick install can be done right in your driveway and adds a service option to any vehicle that doesn't come with a factory coolant drain. Once installed, you simply unscrew the NPT plug and your coolant runs out. Reinstall the plug, fill with fresh fluid and you're done! The PPE Coolant Drain Tube and clamps are manufactured from 304 stainless steel tubing which provides high-strength as well as rust and corrosion resistance. The tube ends have a smooth, consistent bead that provides a superior seal to help prevent leaks.