Review on Oldboy Premium Ceramic Skateboard Bearings (608RS ZrO2 at 8 x 22 x 7 mm) - Perfect for Longboards, Quad Skates, Rollerblades, and Scooters! by Patrick Burton

Better than ceramic bone at around 1/2 price. Bones Swiss Pottery is still the gold standard (3 times more expensive). These bearings are way better than any other ceramic. Out of the box, I was able to scroll for about 2:34 seconds. I am confident that as with most pottery there will be a gradual improvement over the first 50 miles or so. The camp I can most closely compare this to is the Bone Swiss Big Six. really surpasses the properties of bone ceramics (not from Switzerland).