6KU Fixed Gear Single Speed Urban Fixie Road Bike, Slate L/55cm

Comfortable Steel Frame,Reliable Front and Rear Brakes,Fixed or Freewheel with a Flip-Flop Hub,"how to choose size? please select size according to height: small (49cm) / 5'1 ""- 5'4"" medium (52cm) / 5'4 ""- 5'8"" large(55cm) / 5'8 ""- 5'11"" X-large (58cm) / 5'11 ""- 6'4""",how to assemble your 6ku bike? we have the assembly video available on this page or find it on youtube. tools included in the package