I use these for my bed instead of the springs and they hold level longerI purchased a set of these for my VoxeLabs Aquila printer. Installing was easy, I did have to adjust the z-height switch a tad, but once in it was pretty easy to dial in the bed settings.Normally I would have to readjust the bed every 5-10 prints with the old springs, so far over 80 prints and I am still getting a near perfect first layer.Not a super fan of the orange color, but otherwise a solid buy and upgrade to your printer.Big improvement over the springs on my A8. Doesn't cause bed shift under tension, much easier to remove and install than springs, makes bed level adjustments smoother and more consistent.I had no issues with these! To be honest I should have bought them a long time ago.Fits Biqu BX. These work great.These are much better than the standard springs on 3d printers. I would recommend these.Quick delivery, there's four there... The main problem, 3 out of 4 the right height means what a nightmare to get a bed level... Might use these to level a table with a wonky leg at some point as thats the only use this set will get? I still want to know who put them in the bag because that person needs a new ruler or glasses.Nice upgrade.Paired this with autoleveling on my ender 3v2 and it works a treat.Do the job perfectlyWorks perfectly.