Features: Our tubing is crafted using state-of-the-art equipment, ensuring a perfectly round shape and the most consistent diameter possible. The PTFE blue tubing has an outer diameter of 4 mm and an inner diameter of 2 mm, specifically designed for use with 1.75mm filament. It is ideal for printing with larger or uneven diameter filaments, such as wood and metal flake filaments. Higher-end wood filaments are often chunky, containing large pieces of real wood. Includes PC4-M6 and PC4-M10 Pneumatic Fittings for securing PTFE in the extruder and hot end. An extra sharp PTFE cutter is included to ensure a clean, flat cut on both sides, preventing malfunctions or heat creep. Package Includes: 1 x 1-meter Bowden Tubing 1 x PTFE Tube Cutter 1 x PC4-M6 Fitting 1 x PC4-M10 Fitting Specifications: Color: Dark Blue Tubing Length: 1m/3.2ft Tubing Diameter: 4mm (OD) x 2mm (ID) Package Size: 10 x 15 x 3 cm / 4 x 5.9 x 1.1 in Package Weight: 60g/2.1 oz Packing List: 1 x 1-meter Bowden Tubing 1 x PTFE Tube Cutter 1 x PC4-M6 Fitting 1 x PC4-M10 Fitting