F1RST LAYERAuthentic F1RST LAYER Industrial Quality Stainless Steel Pneumatic Fittings 8 x PC4-M10 + 8 x PC4-M6 for All Ender and CR Series Creality Printers

I got got this set and at first I was happy. Installed the couplers with my new bowden tube and all seemed well. Then one day I came back to check on a print and the hot end was fine but the coupler for the extruder end had broken and I had small metal bits stuck in my new bowden tube and a failed print with filament I had to clean up and thankfully salvage.I thought that this was just an isolated incident and there are times that products fail , no biggie I had installed two others on two different printers and those seem to be good.Well sadly that wound up not being the case! Every one of the couplers on the EXTRUDER went bad and ruined prints and bowden tube with one of the prints being was 3 days into a four day print and spaghetti every where!Now, the hot end couplers have been fine! Not one issue. But with every coupler for the extruder failing resulting in bad prints and yards wasted filament this is not good set to buy or they should sell the differentone seperately.I have since installed the fatory couplers and have been going without issues of prints failing from a bad connector on the extruder

The holding power is much greater and these feel a lot more rugged than the stock fittings. There is a certain quality they have when the release is pressed that feels much more robust. The price for the amount of these you get can't be beat.

Easy to print

These fittings are super simple to install. So nice knowing our filament tube is being held snugly in place. We have run our Ender3 for about 40 hours of printing since installed and have had zero issues related to these fittings. Might have to shop around for a few more upgrades :)

High Quality fittings, much better than the factory installed, so not “Authentic”. I replaced my bowden tube, and the factory fitting at the extruder failed. If you’re reading this, your’s probably did too. THESE are the fittings you’re looking for.

This product was great to secure capricorn tubing that kept slipping out. I had tried everything to keep the tubing in place but everything I tried failed.I installed this upgraded fittings to each point where tubing was used and I have yet to have any more tubing slips.

Got this bundle of 16 fittings, thinking "Official Creality" was going to last. Nope!The teeth on these fittings barely grab the bowden tubing, and once the tube is in the fitting, if you ever take it out you might as well change that fitting too, because they just don't hold up.Not sure if this is Official Creality or not, but I would say stay away from them. Not a huge cost, but saving the time and frustration of walking into a half finished print, and a spool of filament pushed out everywhere, is worth looking elsewhere to me.

People always ask what they should upgrade on their CR-10. So far this is the best upgrade I have done! The stock parts are so crappy but these are great, 0 issues. I didn’t realize the CR-10 uses 2 different sizes so that’s why it comes with 2.