Royal Guard II Freestyle Stunt Scooter 6061-T6 post heat treated aluminum deck 6061-T6 post heat treated aluminum bars - w:520mm H:570mm - new heat treatment doubles strength of old Royal bars High Rebound 88A PU cast wheels with spoked Cores Fast and precise chrome steel ABEC 5 bearings (Note: ABEC ratings above 5 don't improve speed) Comfortable ribbed grips