This is a 250mm long M2 lead screw for linear motion.
This specific thread allows the collar nut to move along the rod and reduces vibration for a better print. Recommended as an improvement for pre-existing RepRap printers that use linear rods, this product can be used for either X,Y or Z motion and mounting any payload or device. We recommend purchasing our collar shaft to allow connecting to a stepper motor for rotational movement.