These high-performance, high-rebound scooter wheels were formulated specifically for street scooters. The 5-Star hub is designed to maintain strenght & integrity of the wheel for riders who attempt extreme moves. Replacement wheels fit all 100mm type mini-scooters with and without suspension. Each bearing has shields to protect the bearing from dust and other contaminates. The bearings are manufactured to precise abec 7 standards. To save on supplies and overhead we only ship the wheels & bearings, not the packaging.