I have this kit installed on two of my printers. Extruder pieces were well made and came with an easy to follow diagram. Bed leveling springs are strong and keep good tension on the nice aluminum leveling knobs... would definitely buy again.

The springs and wheels are better than stock, not sure on the rest as my machine came with aluminum

Everything was fine except one of the leveling wheels would go on because of bad threads. Springs are great, extruder seems to be of great quality. Not too worried about the wheel, as it was my least needed thing of the package, but still a little disappointing. Other than that Im very satisfied

the two red adjustable height wheels were missing.

The springs alone increase the quality of life with your printer. I rarely have to keep leveling the bed (even with a BLTouch). Having an all metal extruder is also a must have.

The metal wheels are designed so the edges of the wheel are further up then extruded center pin. So the edges scrape and its difficult to spin. Terrible design. But I put all the other things on it already so I wont bother taking the rest apart to return it

Dropped one star for the fact that the springs are too long for the bed of my Ender 3 V2, the kit however is still fantastic value. The red wheels and the metal extruded are both big upgrades over the standard plastic ones and both are simple to install. Recommended!

I was really pleased with this purchase. These leveling nuts are not a cheap plastic rather, a nice aluminum. The extruder kit is also a nice hard all metal, came with all the mounting pieces, including an extrusion gear and bearing. Overall quality is great and amazing value.

These springs are a serious upgrade over the stock Ender 3 Pro springs! I read a lot of notes saying that the stock springs just didnt have enough tension in them, and after every few print jobs I was having to level the bed again. Not the end of the world, but if something will solve that problem for under 20 bucks, and upgrade the extruder to aluminum, why the heck not go for it? Everything arrived quickly and was neatly packaged. After opening the bag with the bed springs and wheels, I was impressed. The springs are very beefy, the wheels are nicely made and have good grippy teeth on them, which will make fine adjustment much easier, plus the pop of red under the printer is a nice touch. Installation was pretty simple: Unscrew the stock adjustment wheels until they come off the screws. Lift the bed up (being careful not to damage the bed heat wires). Remove old springs. Then I set the rear springs in place and put the bed screws down through them to hold them in place, and then tilted front of the bed down and slipped in the front springs. It was a little awkward to get it all lined up, but nothing too bad at all. After that, I attached the fancy new adjustment wheels. I went around the bed, tightening each corner to around 25%, 50%, then 75%, then finally 100% of the way down. I figured I should tighten them up gradually to keep from twisting the bed or knocking anything too far out of whack. Happy with how things looked, I turned on the printer and hit auto-home, and discovered a problem: Home position now had the nozzle below the print bed! I went back and checked the adjustment wheels and they were cranked down as tight as I could get them. I ended up raising the Z-axis about 2mm and that looked better, so I adjusted the Z-axis stop switch up until it clicked against the bed. Then I fired up the printer again and auto-homed it. Much better! I could see I had a gap now. I dont know if it was the upgraded parts, luck, or what, but leveling was much quicker. I leveled all four corners, then checked the center and it was dead on. After that I went back around the corners to check them all. The front left needed a tiny tweak and everything else was dead-on. The aluminum knobs are super grippy and very easy to make tiny adjustments. The stock plastic wheels werent terrible, but there are definitely better. Ive run 3 or 4 prints since doing the upgrade, and after that batch was done, I checked the level again. Still dead on , right where I left it! Hoping that continues, and things stay exactly where I put them. The extruder upgrade is really nice as well. It went on without any hassle, and feels way better than the cheap plastic included with the Ender 3. (just make sure when you remove the old one that you support the motor - the extruder is what holds it in place and when you remove the last screw, its going to drop!) The thing I like most about it is that its silver so its MUCH easier to see the hole past the gears that you have to get the filament into. That was a huge struggle for me with the black plastic, and with the new silver extruder, you can see exactly where the filament is going and it slipped right in with no trouble at all. I will say that the spring that came with the extruder was bigger and harder to compress than the stock one, and I didnt like the feel of it installed, so I used the stock spring and its been great so far.

Picked this package up right after getting an Ender 3 Pro. The all metal extruder feeder is a must to replace the plastic one that quickly wears out and causes problems. For the seriously good price I went ahead and grabbed this kit for the metal knobs and upgraded springs. The knobs are a nice to have and feel better when leveling, but the springs make the surface feel much more stable and give more control when leveling. This is a great value for a few upgrades that should have come out of the box with the Creality Ender 3.