<BR>Frame Material: Steel <BR>Frame size：54cm <BR>Handlebar：Iron racing handlebar <BR>Stem：Aluminum, Black, 4Pcs Screws <BR>Brake lever: Road bike Brake lever <BR>Tire:700C*28C full black tire <BR>Wheel /Rim:700C Mag wheel <BR>Chain: KMC <BR>Chainwheel & Crank:42T*34T*24T, 170mm aluminum crank <BR>B.B Parts: Sealed Bearing type <BR>Brake: Aluminum Brake, 160mm steel Disc <BR>F/Derailleur：SHIMANO TZ30 , Upward Pull <BR>R/Derailleur：SHIMANO TZ50, Direction type <BR>Shifter: SHIMANO A050 21 Speed <BR>Freewheel: 7plus, 14-28T <BR>Saddle:Comfortable seat <BR>Pedal: Resin Black <BR><BR> Bike weight: 36.4 LBS <BR> Package weight: 46 LBS <BR>Package size: 52*8*28 inches <BR> The max capacity weight: 330 LBS <BR>NOTICE： <BR>1.This bicycle arrives with 85% assembled. You need to install the front wheel, pedals, handlebar, seat and air up the tires. The assemble direction video under products listing, you can according it to assemble your bike. <BR>Bike Installation instruction included in the package, please read it more carefully before installing the bike and tuning the brake and speed system. <BR> <BR>2.Pedal threads are different from left side and right side. L / R signs are marked on the spindle of the each pedal, make sure they are assembled on the right side .Please make sure the pedals are assembled at its correct crank arm and please fully tighten both pedals by the supplied spanner <BR> <BR>3.All tools are included in the package, no extra tools. BR><BR>4.After-sales assistance: <BR>If you have any questions or problems, contact us directly for help.