Our wheels are made from the highest quality cabinet grade MDF wood. Brilliant color graphics with dry-erase laminate cover the entire front surface of the wheel. All wheels feature a standard oversized 18 inch ABS black plastic base and steel pole with durable black powder coat finish. Each wheel is hand balanced to ensure random spins. Wheels spin on twin, maintenance-free, aircraft quality bearings and feature durable black replaceable edge molding, heavy-duty ¼ inch pins with plastic end caps & insert lock nuts, and a professional red urethane clapper with white delron tip.