Shake Junt Bearings are TRIPLE the gangster. Set of 8 gold colored bearings with double removable shields.
Thunder Sonora 147 High Skateboard Truck at Zumiez : PDP
How to Build Your Own Professional Grade Skateboard: Build Your Own Pro Grade Skateboard
The Rush Bombers Titanium Coated skateboard bearings are incredibly light and smooth without sacrificing their awesome speed and durability.
This mechanism uses rotary motion to move a gear quickly and precisely into a fixed position. Using skateboard bearings, you can snap these parts together and use the action for all kinds of useful (or useless) machines.