Dynamo - Tungsten & Aluminum Spinning Top w/ Knurled Grip and TC Bearing

This Dynamo has a tungsten outer ring and a knurled aluminum spindle that houses a tungsten carbide bearing.  The top weighs in at 50 g.  It has reported spin times over 20 minutes.   Due to the inherent issues with tungsten, the top may have some flutter near the end of the spin even after being balanced.   Specifications: Diameter: 1.25 inchesHeight: 1.06 inchesWeight: 50gKnurled Aluminum SpindleTC BearingShips in 1-3 business daysMade in the USA