Injected double molded impact plastic Fork column mountable diameter: Inner diameter O19.6-26mm, O27.7-35mm, L640*W85*H150mm, 208g (Catalog value) Made of flexible and unbreakable injection molded nylon. Product color and size: Product color may look different from the actual product depending on your display settings. Product specifications, logos, and other designs may be subject to change due to improvements. We also cannot answer measurements or personal fit that the manufacturer does not announce. Thank you for your understanding.