CNC machined aluminum alloy stem #6061-T6 Aluminum Alloy Cutting Angle: 85°/95° Column Clamp Diameter: Φ28.6mm Stack Height: 40mm 135g (Silver/80mm (HBN12504)) Product color and size Information: The color and size of the product may differ from the actual product depending on your display type. 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