Bones STF Retros V3 99A 54mmDo your best not to break your bones when skating with the Bones STF Retros 99a V3 Slims Wheels. Manufactured with Bones Street Tech Formula, giving you more slide ability with less flat spots creating a wheel with a substantially higher rebound for more speed and amazing slide capabilities. Manufactured in the U. S. at the Bones factory in Santa Barbara, California, these wheels are skater engineered. Features: Anti flatspot urethane V3 Slim Shape