Titanium bike parts screm-WW02 1.materials : titanium alloy 2.guarantee:lifetime 3.light weight and convenient Titanium bike parts screm-WW021.materials : titanium alloy2.guarantee:lifetime3.light weight and convenient4.Available sizes:20cm,21cm,22cm,23cm,24cm,25cm,26cm,27cm,28cm,29cm,48cm,51cm,54cm,57cm5.Grade:GR1/GR2/GR3/GR5/GR9 Fashion Style Titanium bike parts screm-WW02