12-24V MKS STM32 closed loop stepper motor NEMA17 SERVO42B 0.9 OLED12864 display prevent lose step cost-effective 3d printer

12-24V MKS STM32 closed loop stepper motor NEMA17 SERVO42B 0.9 OLED12864 display prevent lose step cost-effective 3d printer
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sku: 4000272942168
$51.86
Shipping from: China
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