1 Set of Shrimp Feeding Tube Fish Feeder Shrimp Feeder Dish Shrimp Feeding. tie pin tie tack clutch tie tack pin backers Locking Pin Backs Locking Pin. - Used in servo motor systems, 3D printers, CNC machine tools, stepper motors, lifting platforms, the purpose is to make the driving shaft and shaft firmly connect, rotate together, and transmit motion and torque.
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