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

I loved this product. It really helped with my elephants foot problems! That and turning down my heat settings but you get the idea

These are exactly what they claim to be. Not much else to say.

gracias

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 bought the oldham couplers and they didnt match with the original parts.

All it does is make your lead screw bind up. Z stepper was skipping steps and couldnt get the nozzle up off the bed. If your gantry is sinking to the bed when the steppers are off you might benefit from this but for general printers, this is a useless upgrade.

The nut does not line up with the mounting screws on a ender 3. This makes this completely useless. I wasted my time taking the lead screw out only to put it back just how it was.

Fits the stock z-axis bracket fine, but had a slight fitment issue with my second z-axis bracket. Filed the holes a bit bigger on the second bracket and it fit fine. Nuts might seem like they dont fit the lead screws at first. May take some persuasion to get them to seat into the threads on the lead screws.

The description called this a set so I ordered one thinking that it has 2 couplers, but no its only a single one. 1 star because of this