8 Pieces 3D Printer Heat Bed Leveling Parts, Silicone Solid Column, OD 0.63 Inch ID 0.16 Inch Stable Hot Bed Tool Heat-Resistant Buffer Compatible with CR-10 Ender 3 Bottom Connect, Black

Seem like quality silicone spacers. All are the exact same height. Even only being a 7 pack, probably the best priced spacers. But I now can only convert 1 printer instead of 2, so Im a bit disappointed.

Fit perfectly on my creativity ended-6 cycle core

I have replaced the springs on all of my 3d printers with these and would never go back to springs. These are so much better. I highly recommend them.

These have been great to really pull my printbed into tram/level.

These are really made for a beveled screw as they are cut for them so there is a cup of you dont have them and my CRX pro didnt come with them so its not 100% match and made adjustments with autolevel and didnt see much of a difference that manual as I still have to adjust the Z offset -+ 1-.50

Works great on s1

I love these silicone columns. They are great spring replacements. These plus a dab of thread lock on the bed bolts and I havent needed to relevel my bed in over 8 months. Measured at the bolt locations with a probe, the bed is just a level today as it was when I installed these.

First of all, They do not look like the picture. No core and over all a bit cheap looking. All are the same size, I had to cut one to fit in the back where the heating wire for the bed are. I will keep them and see what happens.

Ive only had them on for a few days, but so far they are holding up well. I prefer this greatly to the solid plastic standoffs that come with the Kobra Go. They hold solid while allowing for more adjustability to aid the ABL and have given me great prints so far.

Ive used simulare ones, But these were described as having solid core that appealed to me. But when they arrived they had no solid core. Appeared to expand and shrink frequently based on not being able to get consistant results. As soon as I got my bed level and ran another test to verify last test my bed was off level. Unable to get consistant result even without adjustment from one test to the next back to back. At first I thought something was wront with my ABL sensor so I replaced with old simular ones I was using from another manafacture and I was back to getting consistant results. Luckily these werent expensive but not worth the money.