Feature:
Aluminum alloy headset top bike fork expander bung for 1 inch(24.5mm) or 1.25 inch(28.6mm). Replaces conventional star nut and top , a must for bike steerers. Can be used repeatedly, bite tight, does not hurt the fork, a musthave for topgrade ycles. Eliminating the risk of damage and providing added support to the fragile top of the steerer. Just use the hexagon wrench and then you'll get it installed in minutes.
Specification:
Condition: Brand New
Material: Aluminum Alloy
Color: Black, Red, Blue, Golden (Optional)
Size: Approx. 31.8mm / 1.3in
Weight: Approx. 5055g

Package List:
1 * Bike Stem Headset