1.frame:steel ,TIG welding ,1.0mm 2.competitive price 3.2012 popular model 4.2 years guarantee 5.beautiful in colour 1.size of kids bike 12", 14", 16",18",20"2.color of kids bikered, blue, yellow, black, pink, purple and so on3.frame of kids bikesteel and painting, thicker argon-arc welding/CO2 welding4.fork of kids bikesteel and painting, CO2 welding steel/ suspension fork5.rim of kids ...