1) Frame: 12", steel

2) Fork:12",steel
3) Handlebar: Steel

4) Stem: Steel
5) Brakes: Steel, R/coster-brake
6) Chain wheel: Steel 1/2"x 1/8"x28T
7) Hub: Steel
8) Rim: Alloy
9) Tire: 12-1/2“ x 2-1/4"