It is the a part that gosse in the hole of the wheel and makes it spin longer and faster there are diffrent types of bearings and abec is a raiting used and also abec 3 bearings can be faster than...
Scooter bearing and skateboard bearing are the same. Two go in each wheel of your scooter. They are what let the wheel spin round. If you want some for good value, check out bones reds bearings. Or...