Features: 1) Brand:YZ 2) Material:Steel 3)Application: Bicycles, electric cars, balls Features: 1) Dimensions: 30 ... Material:steelOur products mainly include:bicycle,bicycle accesory,children bicycle,folding bicycle,moutain bicycle,city bicycle. and parts of bicycle and mountain bike such as:chain-wheel and crank ... shoes,tyre and tube,mudguard,side stand,chain adjuster,steel ball,pedal,front fork.