TimberWolf XtreeM Caster Board No Front & No Back bidirectional propulsion with the Patent Pending Rock & Roll Caster Design Customize the Performance with 3 sets of Lifters Included: Speed, Tricks & In-between The Next Step in Caster Boarding, Smoother, Faster, Lighter 7 Ply Maple Deck with Fiberglass reinforced Torsion Bar give more Pop with Less shock Piston Quality Aluminum Parts make the Board Lighter and more Responsive enabling More Tricks