After 3 years in the game North has finally developed its very own bearing. The Polar bearings are genuine ABEC-11 rated & certified and are double sealed to protect them from dirt and dust. The Polar bearings are precision manufactured to the highest standard and specifically designed for scooter wheels, making them extremely high quality, while also ensuring maximum durability and performance. After endless testing, we are confident in saying that these are both the fastest and longest lasting bearing the industry has to offer.