Iron : After phosphating, cleaning, polishing, powder and high-temperature paint handling. Modeling beautiful, secure, not rust, does not fade and is durable. Function : Exercise human upper limb and lower extremity muscles, heart and lung function and enhance coordination capacity. Use : sitting on a seat, hands enclasp handle hands enclasp handle dual stepped on the pedal, stepped down feet, hands to the horizontal direction and pulling repeated use. Scope : schools, gardens, villas, parks, residential quarters, playgrounds, Children's Palace, shopping malls, supermarkets and other various indoor and outdoor venues for people to play fitness entertainment.