It was developed specifically for 1.75mm filament ,Reduces the " room," or buckling, inside the tube, allowing you to print flexible filaments even on the systems. High Temperature Resistance due to using only the highest quality . for XS tubing operate at even higher temperatures than our TL. Less friction means more responsiveness, less retraction, more accurate prints, less slippage, wear, and tear on the extruder, and less clogging when printing chunky filaments such as some woodfills or ironfills. Colour:Gold+black+silver+blue Material:metal Package Contents: 1 x 1M Morri PTFE tube 1 x tube cutter 1 x PC4-M6 Pneumatic connector 1 x PC4-M10 Pneumatic connector Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.