Dear Sir Madam, Type:K Wheel Size:12''-20'' Frame Material:Steel Fork Material:Steel Rim Material:Aluminum Alloy Color:Red Pink Blue purple Brake:R Caliper Brake Frame:Steel Frame Tire:2.125 Saddle:Common Leather Rim:Steel CP Material:High Steel Size:12" -20" Style:RBicycles Product name:child bike from Xingtai Manufacturer