UniTak3D Ender 3 V2 Y-axis Belt Tensioner Upgrade for Creality Ender 3 V2 Ender 3 Pro CR10 Mega Zero 2.0 Flashforge-Aquila AURORA-A5X 3D Printer 2040 Profile

Excellent product, will purchase again soon!

Simple to install and works great to keep the right amount of tension on my Ender 3.

Its been said a time or two that these things can be printed instead of purchased, but Id like to counter that point with a couple of my own: 1). What if you need this because of troubles youre already having with prints? Cant really print the replacement too well in that case. 2). How much is your time (and filament) worth to you? Because this simple add-on cost less than the amount of filament Ive wasted trying to figure out whats going wrong, and could have saved me 2 days of wasted printing time if Id thought to buy it sooner. Im all for printing things that you need customized just for your particular needs, like a desktop tool caddy, but for this? Just buy it already. Its made of more durable metal, is dead simple to install, and provides a feature that honestly should have been stock on this printer in the first place! Within minutes, I had this installed to my Ender 3 Pro, and belt slack was gone seconds later. Great bargain, looking forward to enhancing the y-axis later, too!

The toothed idlers wheels wobbled from the time it was opened. Everything else about this tensioner would be great if the idler was good.

Works very well. Easy to install and super durable. Should be the gold standard for 3d printers to have pre-installed.

This is the second one that I have purchased. Work great and you can adjust on the fly. When installing you can take the item apart and install it without messing with the belts. Happy!!! Thanks

Not really sure if I can find a better one. The only problem is that they get loose over LONG periods of time (like I have to tighten once a month of continuous use). Otherwise, its helped my prints dramatically. Just wish I could lock it in once I got the tightness correct.