F4 / RADIALS 93 DURO 93 DU / 58 MM

Formula:
Soft 93A urethane for rough terrain, high rebound for long-lasting speed
Spitfire Formula Four urethane formula
High abrasion resistance and resistance to flat spots, non-stick slide for consistent, fast, and smooth slides

Shape:
Formula Four Radial
Full riding surface and rounded edge design for control, speed, and responsive slides