53mm Spitfire wheels. Bones bearings are included. I used them a few times, but I didn't really like them, so I'm selling them. They haven't been skated on much at all, so they're practically new. The bearings are also in good condition. I will apply oil to the bearings before shipping, so there shouldn't be any problems. - Brand: Spitfire - Model Name: Formula Four - Size: 53mm - Shape: Tablet Shape - Quantity: Set of 4 Thank you for looking.