Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
WHEEL PROFILE
Narrow - The least amount of traction intended for advanced, technical skateboarding.
FORMULA
X Formula (XF) - XF-97A X-Formulas roll over rough terrain like softer wheels do, but slide much like a harder wheel will.
WHEEL SHAPE
STF V5 Shape - Lighter weight, less side drag, ideal for locking grinds for ledges, rails and bowls.