17HS6401S-SZ 17HS3401S-SZ 17HS4401S-SZ NEMA17 stepper motor dual axis 12V 42BYGH 1.7A 70N · cm suitable for 3D printers

17HS6401S-SZ 17HS3401S-SZ 17HS4401S-SZ NEMA17 stepper motor dual axis 12V 42BYGH 1.7A 70N · cm suitable for 3D printers

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