Genmitsu 4th axis rotary module realizes the A axis is used in conjunction with the X, Y and Z axes to create more complex shapes and contours in a workpiece. While a false 4th-axis system that utilizes Y-axis or X-axis movement to interact on the top centerline of the object cannot produce complex models. Superior Performances Enhanced accuracy with the NEMA17 Planetary Geared Stepper Motor, outperforming other belt-driven rotary modules on the market. Precise Control A 10:1 reduction ratio ensures precise control, delivering a minimum angle of 0.1° and a maximum angular speed of 300° per second. Simple Length Adjustment Quick setup of the 4th Axis Rotary Module Kit to various material lengths, ensuring optimal precision and flexibility in all your CNC projects. Software & Controller For 4th axis use, you need paid CAD/CAM software like Fusion 360 or Vectric and an offline controller for G-code. Review