Frame&Forks: Steel.
Handle-bar&Stem:Alloy.
Grip:PU.
B.B Part:3P. Steel.
Crank&Chain-wheel:Alloy,48T,BK,170L.
Saddle:White PVC leather.
Seat Post: Steel. CP.
Speed:6speed.shimano gear.
Rim:Aluminium double layer,700C"x25C,36H,14G.
Spoke:Stainless Steel.14G.braze nipple.
Hub:Front alloy hub,36H,14G.
Tyre:White tire.700C"x25C.