titanium road bike frame bicycle frame1.Material:titanium 3Al2.5V2.Size:26/27.5/29er*15",16",17",18",19",20"3.Bicycle seat post size:27.2/31.84.Bike seat clamp size:31.8mm/34.9mm5.Wrist group size: above 41.8mm below 52mm6.Color:titanium metal color(silver)7.Weight:15.5"/1.35(kg),17"/1.48(kg),18"/1.52 (kg)8.Surface treatment:Drawing, sandblastingProfessional as one of the leading titanium road bike frame manufacturers, Titanium Industry is also well-known among those credible such suppliers in China. Equipped with a productive factory, we welcome you to purchase quality products. Come and contact our company now!