It comprised by two separate boards, two wheels and torsion bar so that boarders can easily turn and accelerate the board just by twisting. Anyone who enjoys the dragon board will have the benefits of developing flexibility, endurance and body shape improvement. The dragon board also allows the boarder to enjoy the fun of speed and driving. The deck consists of two ergonomic boards, connected with the torsion bar, move side to side. Boarders can move one or both feet to cause the board to roll and The torsion bar is one of the most critical part of our technology. The caster wheel tilts so that riders can go forward by moving the plate side to side. The two robust wheels can rotate freely and are made of polyurethane, which make the dragon board move faster than a skateboard. The body plates are made of ABS synthetic rubber for stability and fordurability Linker: High-rigidity ALU Wheel: Spring with gleam PU wheel Deck material: PC+ABS+ALU-ALLOY N. W: 3.3KG G. W: 3.8KG Meas: 79x23.5x12.5cm(Color Box)