1. Pedal Installation Using Msing Mohs Taper, with more closely, not easy to be damaged; 2. Drive Mode Multiwedge Belt Scheme; 3. All use 19.5kgs(43lbs) external heavier flywheel; increasing the weight of the flywheel outer ring increase the inertia, helps the bicycle to achieve a smooth movement, providing an experience that is closer to outdoor cycling than any other exercise biker; 4. Aerodynamics and round design is conducive to perspiration, and easy to clean and maintain. All the aluminum adjustable parts and the post-stabilizer can ensure rust-proof parts; 5. Large size steel frame is better to make sure the overall corrosion resistance,appearance and stiffness can be improved; it with front, rear handle adjustment and corrosion resistance of the aluminum stabilizer. 6. Device size and weight: Long + Width + Height: 1473x520x1270mm ;