I'll start by saying the nut is well made and still good value for money but. The screw holes are M3.5, or more like #6 (between M3 and M4 I think), which is an odd size that even people with a 3D printer probably won't be sitting around with. It would be nice if they included screws because of this. I ended up using M3 bolts from below and nylock nuts from above. Works great, can't say it's a kludge but it annoyed me that I couldn't easily recycle the original bolts (took longer to accommodate the nuts). The M3 hardware is lying around, keep that in mind. I'm also not sure why it's being sold as a four pack. I'd happily pay the asking price ($9 at the time of this review) for just a nut or two with play if they include the bolts.
Iverntech MGN12 700Mm Linear Rail Guide With MGN12H Stainless Steel Black Carriage Block For 3D Printer And CNC Parts
9 Review
Iverntech MGN12 400Mm Linear Rail Guide Upgrade For Ender 3, Corexy, Tronxy, Delta Kossel 3D Printers And CNC Machines With Stainless Steel Carriage Block
12 Review
Powerful And Waterproof Electric Micro Linear Actuator 12V With Mini Size And Mounting Brackets For Various Applications
11 Review
Upgrade Your Furniture With Happybuy 10 Inch Stroke Electric Actuators - Heavy Duty 6000N DC 12V With Mounting Bracket For Recliner, TV Table, Lift, Massage Bed, And Sofa
9 Review