I like the metal upgrade, springs are great, and the twist nuts are cool but the extruder set was missing a bolt. I was able to reuse old bolts that I had, but be aware, you will be one short.

Everything needed was included, and very easy to install. If you use a glass bed, the Z-axis stop will need to be adjusted up about 3mms

All the components in this kit are well made and easy to install. I installed these on the Creality Ender 3 Pro and they are much better than what came with the printer.

The metal extruder is to replace the plastic one that the arm cracked. Warning the z will need to be adjusted as the springs are taller, making the bed higher. Failing to account for that the nozzle will drive into the bed and damage one or both. The bed remains level better after, but be aware to check first.

Crucial upgrade, great quality

These are great springs, still have to use washers on the front to compensate for it being a cantilever tipping a bit forward, how ever these keep the bed level longer. The extruder rocks, make sure you have the ability to replace the Bowden tube and tube nuts when replacing this extruder. The all metal wheel nuts are awesome and hold in place better than the plastic oe ones.

This set is a must have for any Ender series printer. The original springs that come with your printer are not that strong which leads the bed to be become unlevel very easy, sometimes even during a single print. I used to have an adjustment wheel left on the counter under my printer because it worked itself loose during the print. This set of springs will take care of mist of the leveling concerns you may face. The wheels themselves arent bad that come toil the printer but the red ones look and feel a lot better. The all metal extruder is well worth the money and time it takes to replace. The original one is plastic with a metal tube for the filament to travel thru. After 6 weeks of daily printing of PPE, the filament, even with a filament guide cut thru the tube and started to cut thru the plastic feeder. This will eliminate that problem all together. You have to be aware that the gasket/screw that holds the boded tube to the extruder is NOT the same one/size as the original plastic one. You will need to use the same size that is attached to your hot end (the other side of the boden tube) Get extras of that as well...... Overall, this is a first paid for upgrade that you should do on your machine. While you are at it, get some extra boded tubes form Capricorn.

Everything seems to be quality and fits well only issue was the springs were a little too long for my ender 3 pro so I just raised the z spot a little and after a little trial and error got the bed leveled.

TLDR: If you indend to go direct drive at some point you should get a dual gear extruder instead of this. Full review: Everything in this kit is useful if you leave your printer as bowden drive. The spring upgrades are nice although I have seen there is now a silicone rubber version which is supposed to be a bit better than the springs. I have not tried those and am happy with the orange springs. The oversize aluminum adjuster wheels are great and better than the smaller plastic ones. The metal extruder works better than the plastic one, however when using in direct drive format it would click because it would let the filament slip through the single gear mechanism. I upgraded it to one of the metal red dual gear extruders instead. I am using the hero me 5 remix of the direct drivinator and it works great on my ender 3.

Working perfect