Promax PI-1 Alloy Sealed Bearing 1" Press in Headset Black

The PI-1 Alloy 45x45 headset has an aluminum top cap upper bearing cover lower race and upper and lower cups. All-aluminum construction results in a lightweight headset. Each headset is fitted with super-smooth rolling precision 45x45 angular-contact sealed bearings.Because this versatile headset has 45x45 angular-contact bearings you can use the included cups and install it in standard frames. Or leave the cup in the box and use it as an Integrated headset