• ✔️For 3D Printer Hot Bed / Platform
  • ✔️Material: Screw&Spring - 304 Stainless Steel / Knob - High quality Coppor
  • ✔️Screw size: M3*40mm / Spring size: 1.2*7.5*21.5*8mm
  • ✔️1Set = 1Pcs Screw + Spring + Knob
  • ✔️Made by WINSINN

Great fit on my Anet A8. The wing nuts that came on the printer just weren't doing it for me, so I drilling out the y-carriage holes and bought these (I only used the springs and brass knobs because the screw heads were too big) to level my bed. Works great and makes leveling a breeze!

Worked perfectly for my Anet A8! Did exactly what I ordered them for and they look better than the cheap nuts and bolts that came on my 3D printer.

No matter if you have auto bed leveling or not, you want to be able to easily adjust your physical bed. You still want it as level as possible, and this helps so much in that process. I use it on my Anet A8. As others have stated, the screws are way too long for the A8 and I didn't like the idea of having the head stick up on top of my bed so I used the original screws for my A8 bed, which also are M3 so a perfect fit. I also opted to use my original springs, because they are a bit looser than these and I found it hard to get my bed as far down as I want it. However, even without using neither screws nor springs, this is a great price for the screw knobs, and they are very high quality. Don't forget that if you have an Anet A8, you might have to drill out the wholes in the bed carriage as well - you want the screw to be loose so you adjust it all with the knob. You will also need a washer and nut (x4) to hold the screw in place in the heated bed, so it doesn't just turn around when trying to adjust it with the knob.

These worked perfectly, if you are using them on an Anet A8 like me, you will have to file out the hole for the screws on the bottom base plate first so they move through freely.

Looks great but I couldn’t use the screws because they were too long and would get caught on the front peice of my anet A8, I just simply used the screws that I had prior and it’s all good, the circular but is much easier to use than the wing nut. 5 stars

Overall this is a good kit, unfortunately, I wasn’t able to use it due to the dimensions of my own build—the hex bolts, which were initially appealing for their length turned out to be too long for me. However, don’t let my own inability to measure dissuade you from buying this kit; its bits appear to be of decent to high quality and I’m sure I’ll find a use for them on one of my other builds.

I got these for my Anet A8. Most people print these instead, but I was having calibration and leveling issues so I figured I bite the bullet and just purchase these. The screws are longer than what came with the printer which allows for more room for adjustment, and they still clear the frame. The heads don't sit flush to the heat bead like the stock screws, but that's only an issue if you use the entire heat bed for printing or if it just bugs you (I'm the latter). The springs are tougher than the stock ones, so they aren't as springy. Not really sure if this is good or bad yet. The thumb screws are high quality and hold well on the threads with no apparent slip. Only issue I had was that one of the thumb screws was not threaded. Now if was back home with all my tooling, I probably would have just threaded it myself and moved on, but since that was not an option, I emailed the company and with in the hour or so I had a response about getting me a replacement. Would buy again if I ever had to.

I'm resisting upgrading to an automatic bed leveling system on my 3d printer. Using these posts, I can level all 4 corners and also this makes it easier setting the z-stop because I can fine tune it using the screws rather than messing with the stop on the upright. I can put a little pressure on the allen head of the post, then screw the bottom nut with my fingers. Simplifies the bed leveling.

Confession time - I hate wingnuts. There, I said it. They may have a place in the world, but it is not on my 3D printer. I never realized how much time and effort I wasted leveling a bed with wingnuts until I got these screw knobs. They fit perfectly onto the original M3 bed screws of my Prusa i3 pro. I also kept the original springs, and use lots of M3 washers. The knobs feel solid and precise. They turn very easily with two fingers for fine-tuning, about 1/8 turn between zero to perfect paper/nozzle friction. Bed-leveling is now the least of my 3D-printing concerns thanks to these! Easily one of the most cost-effective upgrades available for a DIY printer. These knobs are 12mm tall and 15mm wide, in case you need to measure fit.

works great on my Anet A8 3D printer these are much better than the stupid wingnuts that came with the printer.