Taiwan Gun provides a brief look at the variety of bearings available for airsoft gearboxes. The presentation highlights various diameters and styles, emphasizing that not all small metal circles are created equal when it comes to internal upgrades. It’s a bit like a jewelry showcase, but with more grease and fewer diamonds.

The Real Deal Airsoft compares the Modify Ceramic Bearings to the Stock Steel bearings of a VFC AEG... "Ceramic bearings vs Steel bearings, what's better? Why?

My stock VFC Bearings became dirty and gooked up, this caused a lot of wasted energy, causing the motor to work harder. The motor would get warm quicker than I would like.

If you're looking for a supply of ceramic and steel ball bearings for your airsoft gearbox, Gunfire just announced that they are now stockists of Kanzen Airsoft Ball Bearings. What they have available right now are 9mm, 8mm, 7mm, and 6mm ceramic or steel ball bearings... "Now in our offer you can find high quality, ceramic and steel bearing made by French company - Kanzen Airsoft!"