Twincam ILQ9 Pro bearings are high regarded amount elite athletes in all roller sports. When Kid Block is looking to smash her opponents, she needs a bearing as tough as she is, she chooses this one. Twincam is a famous name in the bearing industry and the ILQ9 Pro is the top end of the product line. This bearing is also a favorite training bearing for our inline speed skating team. By having the inside of the bearing open, it allows for easier care and cleaning.