I have uploaded two top sizes. The larger is approximately 60mm high and the smaller is approximately 40mm high. Both tops spin very well. The larger one may spin a little bit longer because it has more mass. I printed these with 25% fill, 0.2 layer height, No extra shells, with Support (Min angle 60 deg, No Cross hatch).I have added updated models that have hollow centers (Version 3). These seem to spin longer.