Features:
Aluminum alloy construction delivers excellent stability and durability. CNC high precision machining and fine workmanship, colorfast and anti-deformation. Suitable for 34mm bike frame head tube. Compatible for 28.6mm straight steerer fork. Easy to install and use. Nice replacement part for your bike.

Specification:
Condition: 100% Brand New
Brand: Risk
Material: Aluminum Alloy
Color: Black, Red(Optional)
For Frame Head Tube Top and Bottom Diameter: 34mm / 1.3in
For Fork: 1 1/8" (28.6mm) Straight Steerer Fork
Height: 14 + 12= 26mm
Dimension: Approx. 4.5 * 4.5cm / 1.8 * 1.8in
Weight: Approx. 116g

Packing List:
1 x Bike Headset