More Details on Spitfire Formula 4 OG Classic 99a Natural:
FORMULA 4 Unbeatable lasting performance SPITFIRE urethane. Fast as hell. Long lasting, abrasion resistance, smooth anti-stick slide with a controllable grip. Guaranteed.
OG CLASSIC Spitfire's original cut-away shape. Features a wider riding surface shape, lightened with cut away side walls.
99a Durometer
