4PCS 40mm Hand Twist Leveling Nut + 4PCS Hot Bed Spring Compression+ 4PCS M4X40mm Screws for 3D Printers（4 Set）

My ender 3 used to unlevel after every print. This helped so nowni just have to make minor adjustments every few prints!

I purchased this item to replace one of my bed leveling wheels that I had misplaced, it arrived in no time flat.

I used this for a cr 6 SE. It will work out of the package but beware that unless you drill out the threads on the 4 corners of the base plate the knobs are useless. In my opinion this is a great upgrade over the plastic or silicone stands typically used for this printer.

My son has an ender 3 printer, these work great! Easy to install and very easy to level properly!

I bought this mainly for the springs, but the springs are super great. They are much tighter and resistent than the stock springs for the Ender 3, and this gives them more staying power when you adjust them. I am very pleased with this purchase.

Works as expected. Finally able to install after waiting a month for the printer to arrive.

Knobs were much smaller than what I expected and almost half the size of what came with the printer (I actually laughed when I saw them). Fortunately I didn't really need them since the original ones that came with my Ender3 pro kit were fine. I bought this kit for the springs as it was cheaper than ordering a huge package of springs, I had planned on using the knobs but didn't see the point of using smaller ones.

This product works as advertised, though the reason that I don't think this deserved all 5 stars was that the injection molding was lazy. Even though this is an upgrade part, it doesn't really feel like an upgrade part. The injection molding was incredibly lazy because there was both some flashing left on the plastic parts of the wheels as well as there wasn't really a bottom for these so you have to put the nuts on the way that they want you to or it'll be showing the low quality molding and cut corners on the factory side of things. That being said, these are cheap but they get the job done even though it would be much nicer if the company put that extra little bit into making it something that i would recommend.

Es un producto de calidad y tiene lo que indica, el pedido tardó mucho menos en llegar que lo que se decía, sin embargo los resortes son bastante largos lo que impide que se ponga algún cristal pues por más que se apreten no lograr entrar nada encima de la cama caliente, nada que no se pueda arreglar subiendo un poco el inicio del eje z pero algo molesto tener que hacerlo