This model replaces the Stabilizer End Cap for the Life Cycle RS3. Compare to manufacturer's part REX2LRB. For cleanest print and to avoid supports, cut in half and print with ribs facing upwards, then glue together. In my experience, 0.2mm thickness of plain PLA @ 15% infill is sufficiently durable. Check out the provided images for a detailed visual of this 3D model and the suggested printing layout.