eBay

A genuine Creality 42-34 round-shaft stepper motor, as used on several of their printer models.

Technical specifications include:

2-phase 1.8 degree steps.
20mm round shaft, 5mm diameter.
4.83V, 0.8A per phase.
1-1000RPM, 0.4Nm Torque

Suitable Models:

Printer	X-Axis	Y-Axis	Z-Axis	Extrude
Ender 3	42-34 D-Shaft	42-34 D-Shaft	42-34 round shaft	42-40 D-Shaft
Ender 3 Pro	42-34 D-Shaft	42-34 D-Shaft	42-34 round shaft	42-40 D-Shaft
Ender 3 V2	42-34 D-Shaft	42-34 D-Shaft	42-34 round shaft	42-40 D-Shaft
Ender 5	42-34 D-Shaft	42-40 dual-shaft	42-34 round shaft	42-40 D-Shaft
Ender 5 Plus	42-34 D-Shaft	42-48 dual-shaft	42-34 round shaft	42-40 D-Shaft
CR-6 SE	42-34 D-Shaft	42-40 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-10S Pro	42-40 D-Shaft	42-40 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-10 V2	42-40 D-Shaft	42-40 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-10 mini	42-34 D-Shaft	42-34 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-10-S3	42-40 D-Shaft	42-40 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-10-S4	42-40 D-Shaft	42-60	42-34 round shaft	42-40 D-Shaft
CR-10-S5	42-40 D-Shaft	42-60	42-34 round shaft	42-40 D-Shaft
CR-10 Max	42-40 D-Shaft	42-60 dual-shaft	42-34 round shaft	42-40 D-Shaft
CR-20 Pro	42-34 D-Shaft	42-34 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-X	42-40 D-Shaft	42-40 D-Shaft	42-34 round shaft	42-40 D-Shaft
CR-5 Pro	42-34 D-Shaft	42-48	42-48 round shaft	42-48