VEXpro Colson Performa Wheels - VEXpro 217-4051, Colson Performa wheels are some of the most widely used and recognisable wheels in large-scale competition robotics. Originally designed for industrial material handling applications, their ideal balance of traction and durability make them a natural fit for our uniquely demanding environment.When VEX engineers combined their experience on the playing field with Colson Caster\'s top wheel designers, the result was simple and effective: lightweight VEXpro hex hubs moulded directly into the Colson moulds teams have been using for years. VEXpro 217-4051 Colson Performa (4\" x 1.5\", 1.1875\" bore)