4PCS Upgraded Hand Twist Leveling Nut Diameter 60mm + 4PCS Hot Bed Spring + 4PCS M4X35mm Screws for Creality 3D Printer CR-10 CR-10s Ender 3 Ender 3 Pro Ender 5

The plastic 90mm wheels didn’t fit my CR10 S4. Then again, they never specifically said they did... the S4 has 2 rails/tracks on the bottom the bed/Axis slides along, pretty close to the leveling adjustment screws. Not enough clearance for the big knobs.Springs were fine. Was worth it just to not try to figure out something makeshift from the hardware store.

The kit was easy to install on my CR10 and Ender 3 Pro. It makes a bit of a metal on metal scraping sound when leveling. Maybe four plastic washers would be a good addition to the kit.

I tried it on both sides, and the wheel still rubs against the bed frame. Needs a spacer or washer to prevent that. I ended up using the springs with my stock bed leveling wheels.

While nothing is wrong with theses spings, the large or small ones, nor the hand wheels, they are weaker than the ones that came on my Ender 5 Pro. I decided not to use them.

They went on perfect with no issues and you can feel the tighter tension these have compared to the ones that came on machine first

These things worked great on my CR-20 pro.

Works really well with the borosilicate bed.

Pros:+ Looks coolCon:- Makes your y-sled weigh more- No directional markings- Rubs on the bottom of your sledThe aluminum wheels do their job but they also add significant unnecessary weight to your y sled. They’re also unmarked incase you don’t know which way to turn the wheels. Additionally they rub or scrap against the sled which is probably an aluminum plate; you know because both materials are of the same hardness. These wheels are good if you’re making a corexy design but reduces your print quality on a typical cartesian style printer.Aluminum (just the four wheels themselves): 92.3gPlastic: 31.8gNet: 60.5g of pointless weightFYI the maker doesn’t hide the weight. They’re just bad at explaining the specs in the description. The weight is per wheel including the screws and springs; a less than useful value since you’re probably wondering what the actual wheels weigh and not what the common parts weighs.