PTFE Tube For 3mm filament Bowden 3D Printer- 4mm ID x 6mm OD x 16.5ft（5Meters) this tubing provides smoother filament feeding compared to standard 3mm designs, reducing the risk of clogging and improving printing consistency. Engineered for Bowden extruder systems 3D Printers- Works seamlessly with a variety of Bowden extruder systems and 3D printers, including popular models like Creality Ender 3, Creality Ender 3 V2, Prusa i3 MK3, Tevo Tarantula Pro, Elegoo Mars Pro. Stable Filament Transmission for High Precision- Capable of withstanding temperatures from -454°F to 500°F, Compressive Strength: 12Mpa/1740Psi. this Teflon tube performs reliably even in challenging printing environments, maintaining consistent results. Resistant to Corrosion and Chemical Exposure- Engineered with high-quality PTFE, the tubing resists acids, alkalis, and organic solvents, making it a reliable choice for both hobbyist and professional 3D printing applications. Safety PTFE Materials - Manufactured with FDA-compliant materials (FDA 21 CFR 177.1550) and featuring a UL-224 VW-1 flame rating, this tubing is safe for food contact and widely applicable across machinery, electronics, valves, chemical, and industrial uses. Note:Double-check that you're using "3mm filament". While the tubing is compatible with 3mm filament, it’s crucial to ensure your printer is designed for this size, as 1.75mm filament requires a different tubing size. Upgrade your 3D printing experience with our premium PTFE Teflon tubing! Designed for precision and reliability, this 16.5ft (5m) tubing is perfectly suited for Direct Drive Extruder 3D printers such as Bambu Lab A1/A1 mini/P1P/P1S/X1C and Creality K1/K1 Max/Ender 3 V3. With an optimized 4mm inner diameter and 6mm outer diameter, it ensures smoother filament feeding and reduces jamming compared to standard tubes. Engineered to perform in extreme conditions, this tubing withstands temperatures from -454°F to 500°F, delivering consistent, high-quality results even under demanding environments. Its high-quality PTFE material resists corrosion from acids, alkalis, and solvents, making it ideal for long-term use in 3D printing, medical, and industrial applications. Certified safe for food contact (FDA 21 CFR 177.1550) and flame-resistant (UL-224 VW-1), this tubing is the ultimate choice for professionals and enthusiasts seeking precision, reliability, and safety. Elevate your printing projects with this must-have upgrade!