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Linear Stage Actuator 400mm Ballscrew 1605 Optical Axis Linear Rail Guide Manual Slide Stage C7 - Ruler for DIY CNC Router Controller XYZ-Axis Stage Timing Pulley and Belts NJ2312EG Nachi Cylindrical Roller Bearing400mm Manual Linear Slide Table with Handwheel SFU1605 Ball Screw C7 Accuracy Dual Axis Guide This 400mm (16") manual linear stage is a precision built platform designed for smooth motion and modular expansion. Featuring an SFU1605 C7 graded ball screw and dual optical axis guidance, its ideal for cross slide setups, gantry builds, and multi axis CNC machines. The unit includes a laser engraved handwheel with a locking pointer and HD ruler for