2-Pack CR10 Z axis T8 Anti Backlash Spring Loaded Nut Elimination Gap Brass Nuts for Upgrade Ender 3 Ender 3s Ender 3 Pro V2 CR-10 Tornado 3D Printer 8mm Acme Threaded Rod (Nuts)

Good product for the price

THIS IS A BIG ISSUE, DO NOT BUY UNLESS THIS IS FIXED. THIS WOULD NOT FIX ON MY ENDER 3 as the MOUNTING HOLE IS too far apart.

Waste of money. The mounting holes are 1-2mm too far apart and do not line up with the stock lead screw bracket nor do they fit my aftermarket dual lead screw bracket. Look at my 2nd picture and you can visibly see the difference in hole spacing. Buy something else.

I installed these by following a video on how to install a backlash nut on an Ender. I compressed the nut, threaded the Z rod and it looked good. However, the gantry still drops at the lightest touch. Perhaps this would work better on a different printer.

Nice upgrade for any 3d printer. Really helped with the backlash

Easy to install. Just do one side at a time.

Good product

I bought both the nuts and an oldham coupling and spent 2 hours trying to get the screws in to the nut from the oldham coupling. The first issue is that there was NO instructions and no included screws, but even after I looked at a different brands listing to see how they worked, I realized the reason I had been struggling was because the screw holes on the nuts were farther apart then the oldham coupling openings. Frustrated and impatient, I clamped down on the two parts with pliers and forced the screws in and got it together. Mostly because I didnt want to go to the hassle of sending it back and most of these seem to have people listing the same issue. However, these are some of the more expensive ones and I dont see any reason to spend the money. Buy cheaper!

Doesnt fit the ender 3.

The mounting holes on these anti-backlash buts are drilled slightly too far out from the stock mounting holes, so they dont fit on the brackets. Completely unusable without hogging the bracket holes out!