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.
Hard Line - Hardline wheels come in a conical shape with sharp edges and an extra wide riding surface for maximum grip and control on any terrain.
Elite Formula - OJ's "way too fast" formula. Made from 100% team tested urethane, these super durable wheels offer more speed for even more sessions.
101a - Most common durometer offering a good balance between speed and grip. Meant for skateparks and other smooth surfaces.