All sizes are available in five hardnesses;88A - Highlighter Turquoise91A - Highlighter Yellow93A - Highlighter Red95A - Highlighter Blue97A - Highlighter PurpleThe Radar Presto offers the previously unattainable combination of lightness, speed, grip and controlled stops in three different size variations;59mm x 38mm Neothane Urethane with new Tiger two-piece dynamic core hub in black.62mm x 38mm Neothane Urethane with new Tiger two-piece dynamic core hub in white.NEW 62mm x 44mm Neothane Urethane with new Tiger two-piece dynamic core hub.Introducing the Presto! Featuring the all-new Tiger 2 piece Dynamic Core hub and Neothane urethane, the Presto sets a new standard for performance. Instead of having a single hollow cavity, the Tiger has channels, which offer support to every part of the wheel’s surface while keeping it extremely light. The result is a fast and aggressive ride.The Radar Presto offers the previously unattainable combination of lightness, speed, grip and controlled stops in three different size variations;59mm x 38mm Neothane Urethane with new Tiger two-piece dynamic core hub in black.62mm x 38mm Neothane Urethane with new Tiger two-piece dynamic core hub in white.NEW 62mm x 44mm Neothane Urethane with new Tiger two-piece dynamic core hub.Introducing the Presto! Featuring the all-new Tiger 2 piece Dynamic Core hub and Neothane urethane, the Presto sets a new standard for performance. Instead of having a single hollow cavity, the Tiger has channels, which offer support to every part of the wheel’s surface while keeping it extremely light. The result is a fast and aggressive ride.