Smooth - Smooth wheels come with a shiny coating on the riding surface that feels grippy at first, but wears away quickly.
Medium - Your classic wheel shape, versatile all-around wheel for street/park skating.
X Formula (XF) - XF X-Formulas roll over rough terrain like softer wheels do, but slide much like a harder wheel will.
V5 Shape - Lighter weight, less side drag, ideal for locking grinds for ledges, rails and bowls.
Lip Radius: 0.5"
Bearing Placement: Center-Set/Reversible
99a - Offers more grip than harder wheels and more slide than softer wheels. Great for slick surfaces when you want more control.