Amazon.com : Skateboard Wheels - 54mm 4 pcs Set White, Professional Grade with ABEC-7 Bearings, for Street Skate, Vert Ramps, Tricks and Grinds, 102A Hardness : Sports & Outdoors
How to Choose a Skateboard Wheel: Size, Materials & More | Tactics
Amazon.com : Skateboard Wheels - 58mm 4 pcs Set White, Professional Grade with ABEC-7 Bearings, for Vert Skate, Ramps and Grinds, 100A Hardness : Sports & Outdoors