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ROBOTSKULL
RB NEMA 23 (57MM) COUPLING 6.35X8MM FOR STEPPER MOTOR
Per piece
    Aluminum Helical Shaft coupling is commonly used in 3D Printers, CNC machines and other DIY projects to couple Stepper motors and 8MM rods / threaded rods / precision trapezoidal rods. The coupler takes care of small mis-alignments, deviations and twists in the system. Our coupling comes with 4 grub screws installed. One package consists of 2 couplers. Please note that the bore diameter of this product is 5MM and 8MM. See specifications below for more details.