I bought them to put on my Cr-10 v2. They appear to be well made and easy to adjust to fit the printer. You'll need to file/cut/sand the side of them to make one of them fit onto the lead screw next to the stepper motor. On a bolt with nothing near the nut, you don't need to change it. They are made of brass so soft and easy to work with. I bought a second set to have one for my Ender 3 with an extra for a future printer.
Iverntech 400Mm MGN12 Linear Rail Guide With 2 Black Stainless Steel MGN12H Carriage Blocks For CNC Parts And 3D Printer Upgrades
8 Review
Iverntech MGN12 700Mm Linear Rail Guide With MGN12H Stainless Steel Carriage Block For 3D Printer And CNC Parts
11 Review
Iverntech MGN12H Linear Rail Guide With Stainless Steel Carriage Blocks - 700Mm Length For 3D Printer And CNC Machine
9 Review
Goodyear Ultra Grip Ice SUV 235/65 R17 108T winter
35 Review