Authentic Capricorn Bowden PTFE Tubing XS Series 1M for 1.75mm Filament with PTFE Teflon Tube Cutter, 2X PC4-M6 Extruder Fitting, 2X PC4-M10 Hotend Fitting for Ender 3 V2/3/3 Pro/CR-10 3D Printers

Its important to have a PTFE tube cutter, and it just so happens that not only does this have that and the best PTFE tube on the market (in my opinion), but it also has some decent replacement nozzles. If you dont already have a PTFE tube cutter, this is a good kit to buy if for no other reason than to get the replacement parts.

Tubbing is supposed to be for 1.75mm filament, but created high amount of friction when filament inserted. Too much force needed to feed filament through PTFE. Wrong size? Poor quality? Bad manufacturing?

works great

Good quality tubing delivered fast and in good packaging.. will buy from again…

Capricorn Bowden PTFE tubing is a nice upgrade with much better connectors.

It seems like a ton of people in the 3D printing community recommend this tubing because of its tighter inner diameter spec leading to more consistent moments from the extruder. In theory, and when using filament that is exactly 1.75 mm or less throughout the entire spool, this is very true. However, the vast majority of brands will have a variance that goes a little (or a lot) over that 1.75 mm spec at some point in the spool, which is almost guaranteed to cause a jam with this XS tubing. Even if there is only one spot on the entire 300 meter spool that is slightly out of spec, that is enough to cause friction in the tube and for it to cause a jam. At first, I refused to believe that the tubing was causing the issues and thought I might have an extruder issue. I thought maybe the extruder spring was a little too tight causing it to squish the filament while it pushed it into the tube, making it press against the inside of the tubing. So, I replaced the entire extruder assembly and tried many different springs. No change; my machines were still jamming on a daily basis. I tried many different filament brands from Overture, Hatchbox, eSun, Amolen, etc... and all would, given enough time, eventually cause jams on both of my printers with the tubing installed. I also bought some of this XS tubing for my coworker and he experienced the exact same issue. The issue has only gone away when I replaced the tubing on both of my printers with slightly less tight inner diameter spec of 2.0 mm instead of the 1.9 mm this tubing comes with. Ive been printing nearly non-stop now for four days and have yet to experience another jam. Before you disregard this review with, Well, Ill just make sure my filament is to the correct spec. Understand that, even with the filaments that would measure at or close to 1.75 mm in the first few meters I checked, there was no way I could check every mm of the entire 1 Kg spool. All it takes is one spot to be too far out of spec to cause friction in the tube, leading to your extruder forcing the filament through, causing more friction, resulting in your extruder gear crushing the filament to the point it will no longer move at all. Its a snowball effect of friction. Aside from the inner diameter spec being too tight (which is the whole point of this tubing), everything else was fine. The quality of the tubing was great, the consistency of the tubing itself appeared to be flawless, the cutting tool it came with worked well, and the couplers were a nice upgrade over stock. However, almost none of that matters when the 1.9 mm tube diameter shouldnt be used at all for printing if you care about printing reliability.

Replaced a stock bowden tube with this, done 50 print hours so far and everything is going great.

Says it comes with 2X PC4-M6 Extruder Fitting and 2X PC4-M10 Hotend Fitting. My package only had 1 of each fittings. I am so tired of being ripped off.

Its new, its blue, it works as advertised. I dont believe this noticeably improved my prints, but for replacing my tubing that had gotten a little mangled it worked great. The releases work better than the originals as well. On an Ender 3 pro, there is enough new tube to replace the bowden tube twice. The included tuning cutter works well too.

Plenty of tubing in this kit and the cutter is a must for a nice clean square cut!