This is 400mm length, 8mm lead screw, 4 starts, 2mm lead, so 8mm lead (stroke / Sales volume) . There is some play in the nut, you might want to consider a nut with anti-play. This is a replacement screw for Creality Ender 3/ Pro. THE NUT SHOULD NOT be placed on edge 3.
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
Iverntech 400Mm MGN12 Linear Rail Guide With 2 Black Stainless Steel MGN12H Carriage Blocks For CNC Parts And 3D Printer Upgrades
8 Review
Powerful And Waterproof Electric Micro Linear Actuator 12V With Mini Size And Mounting Brackets For Various Applications
11 Review
Iverntech MGN12 700Mm Linear Rail Guide With MGN12H Stainless Steel Carriage Block For 3D Printer And CNC Parts
11 Review