FSA Bike Bicycle Cycle No.63/51 Headset In Black, 1.1/8-1.1/4″ Colnago

Angular Contact Bearing (black seal)

For tapered 51.2/56.2mm OD head tube

For 1.1/8" to 1.1/4" tapered fork

Stack height: 17.5 + 3 = 20.5mm

1.1/8 – 1.1/4", 4545 ACB

Steerer :1.1/8-1.25"

Brand Name : FSA

Lower : 49.7mm

Upper :44.7mm

Weight: 109.4g