The Belt and Pinion system provides smooth, accurate, and quick operation along V-Slot Linear Rail - perfect for your industrial projects and hobby projects, and more. The kit is an easy way to get all the pieces needed for the build, and you can customize it with different options of V-Slot Extrusions and Gantry Plate. Follow the instructions below to put it together step by step. This pack includes a Nema 17B Motor. Note this pack does not include V-Slot, GT2 Belt