if need more detail, please contact me . 

contact : Tina shang  wechat/whatsapp: 0086-18132937310  

• FRAME: steel, TIG, painting
• FORK: steel, TIG, painting
• STICKER: outer sticker
• HEAD PARTS: UCP
• BB PARTS: medium, 46.4mmX1.8MM
• HANDLEBAR: 22mmX0.9mm, 12"/16" W: 480mm 20"W: 520mm
• STEM: one point, CP
• GRIP: 110mmx22mm
• TIRE: 2.125, black tire
• INNER TUBE: 2.125, A/V, natural rubber
• RIM: double alloy
• F/HUB: UCP, 3/8x10Gx130L, 12"16H, 16"20H, 20"28H
• R/HUB: UCP, 3/8x10Gx180L, 12"16H, 16"20H, 20"28H
• SPOKE: UCP, 14#
• TOOTH PLATE: black 12"24T, 16"28T, 20"32T
• CRANK: CP, 12"89mm, 16"102mm, 20"114mm
• PEDAL: white, good quality
• F/BRAKE: 3.0 caliper brake
• R/BRAKE: 70x1.0 band brake
• BRAKE LEVER: plastic brake lever
• FREEWHEEL: 16T
• SADDLE: leather, good quality
• SEAT POST: UCP, 25.4mmX180mmX0.8mm
• CARRIER: steel
• MUDGUARD: steel mudguard
• CHAIN COVER: plastic chainguard
• BELL: same as picture
• BASKET: plastic
• TRAINING WHEEL: plastic 
• TRAINWHEEL BRACKET: 2.5mm