Dia-Compe NB-1 Headset Silver 1"

Description

Lightweight, precision sealed bearing alloy headset for use on 1" threadless system forks.
ITA standard type sizing.
 
Features
Aluminum Headset cups 

Sealed cartridge angular contact bearings

Star nut and aluminium Top Cap included 

Size: 1" Italian size only 

Colour: Silver or Black anodised

Specifications
Upper stack height: 14mm

Lower stack height: 11mm

1" Italian specification sizing:

Crown race: 26.4mm

Headtube ID: 30.2mm

Fork steerer OD: 25.4mm

Note: Please pay particular attention to the diameters, as 0.2mm is a significant difference.
Installing an incorrect size part will damage frames or forks.
Do not use Star Nut insert on Carbon forks.
Seek assistance from an experienced Bicycle mechanic if in any doubt