Description:Bike Headset Base Spacer: Traditional and integrated type headset crown races

Material: Made of quality aluminum alloy material, high strength, anti rust, and durable

Easy to Use: Easy to install and carry

Feature: Suitable for 44-56mm headset

Bike Accessories: Useful accessory for bicycle lovers to DIY their bikes

proper fit to the tube of most bikes

Specification:Material: Aluminium AlloySize Chart:C Bottom Base:Fit for 1

5inch tapered forkOuter Diameter: 51mmInner Diameter: 39

7mmBearing angle: 45 degreeD Base:Fit for 1

5inch tapered fork, 28

6mm(1

125inch) straight forkOuter Diameter: 51mmInner Diameter: 29

9mmBearing angle: 45 degreePackage Includes:1 Bicycle Headset Base SpacerNote:Please allow slightly errors due to manual measurement and different monitors