Descripton from the Dynamic website:
This is our "standard shape" fingerboard wheel which features a slightly asymmetrical design that allows for easy lock-ins to grinds and grip on all surfaces. The wheels also feature our 70D durometer urethane material that feels perfect for indoor and outdoor surfaces. There is a high precision single bearing locked in place to ensure no bearing slip. Compatible with Dynamic Trucks and most other professional fingerboard trucks.
Each pack contains : 4 wheels 70d
*COME WITH A TRACKING NUMBER*