Attachment for setting ahead type stem (inner diameter φ1.1 inches (22.2 mm) thread-type forks (inner diameter φ28.6 mm). Material: Aluminum; Color: Silver; Fork Inner Diameter: 0.9 inches (22.2 mm); Column Clamp Diameter (Stem Inner Diameter): 1.1 inches (28.6 mm); Compatible with Diameter Ahead Stem Height: 1.5 inches (38 mm); Height Adjustable Range: 1.0 inches (25 mm); Weight (Catalog Value): 5.5 oz (164 g). *The color of the product may differ from the actual product depending on your display type. Please be aware that product specifications, logos, and other designs are subject to change due to improvements.