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6061 Anodized Aluminum
Tungsten Carbide Spheres (twice as dense as steel)
CNC Machined in USA
Just over 2.5 inches long
Three Bearing Options
Hybrid Closed Race (quiet, shorter spin time 2-3 minute)
Hybrid Open Race (louder, long spin time 2-4 minute)
Full Ceramic Bearings (quiet, long spin time 2-4 minute)
Black buttons are sold out until late March 2019.