Simple aluminum alloy stem. #6061-T6 Aluminum Alloy Forged Column Clamp Diameter: Φ28.6 mm Stack Height: 40 mm 125 g (HBN10600) About the color and size of the items color may look different from the actual product depending on the type of display. Product specifications, logo design, etc. may be subject to change for product improvement. We also cannot answer measurements or personal fit that the manufacturer does not announce. Please be aware of