LY2013

Size: 1-1/8" Threadless Integrated Headset 

Diameter: 1-1/8"x52x $30or$39.8 

Height: 44mm+1mm 

Weight:126g 

Bearings (t):52×40×8H×45° x45°×2pcs

Compatible with racing bikes, mountain bikes

Specialized，Cannondale，Santa Cruz， Bianchi，Pinarello，Giant，Trek, Cervélo...