The Roll-Line Abec 5 Bearings are specifically made for skaters who are skating double-rotation jumps. The Abec 5 Bearings are free rolling with minimal radial pay which very evenly distributes the load across the seven balls for an optimal level of roll. The Abec 5 are suitable for all plates with Ø 7mm axles and are open on both sides to facilitate cleaning and lubrication.