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

Please note this Dynamo has 6 balance holes.  Please be sure to review the pictures before purchase.  

This Dynamo has a tungsten outer ring and a knurled aluminum spindle that houses a ceramic Si3N4 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 inches
Height: 1.06 inches
Weight: 50g
Tungsten ring with six drill holes for balancing
Knurled Aluminum Spindle
Ceramic Si3N4 Bearing
Ships in 1-3 business days
Made in the USA