Increase the durability and performance of your pipes with PTFE / Teflon Tubing. The 4mm OD and 3mm ID ensure a secure fit, while the high-quality material offers resistance to chemicals, extreme temperatures, and wear. Upgrade your plumbing system today with this cost-effective, per/M solution. Transforming your projects with ease. Non-stick and made with durable PTFE material, this versatile tubing can handle it all - all while making cleanup a breeze. Customizing your setup has never been easier with convenient meter-by-meter purchasing options.