1" ITA lightweight, high quality alloy sealed bearing threadless headset. 
 
 Lightweight aluminium cups
 Sealed cartridge 36/45 deg. angular contact bearings.
 Secure fit to fork with split compression ring.
 Alloy top cap and std. Star-nut* included
1" Italian specification sizing: 
 Crown race: 26.4mm
 Headtube ID: 30.2mm
 Fork steerer OD: 25.4mm
 
 Stack Heights: 
 Upper: 14.5mm
 Lower: 11.8mm
 Total: 26.3mm
 
(*Caution: Do not use Star-nut in conjunction with Carbon steerer forks.)