The Remember Hoot 80a Green Slide Wheel is a 70mm center set wheel with a slightly rounded bevel lip. Remember created this wheel to grip when desired and slide when needed. The 80a durometer is perfect for just about anything. The high rebound urethane lays sugary lines and is a predictable slide every time. The Hoot wheel has a graphic on just one side of it and has a plastic core. wheel are sold in sets of four.