The AO Circle pro scooter wheel performs as good as it looks. The Circle wheel uses a urethane with an 88a durometer, so it is on the harder side of the spectrum. A harder urethane will perform better in rougher terrain, and will generally spin a little faster than softer wheels. Like all other AO wheels, they come pre-installed with ABEC-9 bearings.

• Size: 120mm
• Core Width: 24mm
• Urethane Width: 24mm
• Core Material: Aluminum
• Urethane Rating: 88a
• Bearings included: Yes, Abec 9