... 2mm,31.6mm Length:350mm, 400mm, 450mm Titanium bicycle MTB seat post Why Titanium? 1.Extended Fatigue Life (frames that ... good ductility and easy tobe welded, our frames,seat posts,stems, forks and bar ends are all ... use 6AL/4V for some small parts, such as seat clamp and head set. Why Us? 1. Excellent workers ... Fastest lead time 10. Convenient transportation Affordable titanium bicycle MTB seat post