Narrow - The least amount of traction intended for advanced, technical skateboarding.
Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Formula Four Urethane - Unmatched abrasion resistance for fewer flat spots. More controllable grip. Lasting speed no matter the terrain. Smooth anti-slick slide and a longer lasting size and shape.
Tablet - An original Spitfire shape. It's lightweight, quick, and responsive. A straight cut profile, and a thin riding surface makes these wheels great for locked in grinds and controlled slides.
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.