It's a Z-Axis Leadscrew Top Mount for 3D Printer
Apply to: CR-10, Tornado, Ender 3 etc
2 * Z-axis with screw bearing
4 * screw
4 * Boat nut
2 * bearing
2 * top wire
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.