Specifications:
Material: 304 stainless steel screw + 6061 aluminium alloy
Color: Black, Blue, Green, Gold, Red
Package Weight: approx. 54g
Outside Diameter: approx. 28.6mm / 1.1"
Expanded Range: approx. 22.2-25.4mm / 0.8"-1"
Process: diamond knurled, T6 heat treatment
Suitable: front fork with upper end outer diameter of 28.6mm (carbon fiber front fork and mountain suspension fork are applicable)

Package Included:
1 Set Bike Stem Headset Top Cap Fork Expander

Note:
1. Please allow 1-3cm error due to manual measurement. Thanks for your understanding.
2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please in kind prevail.