Columbus style integrated headset Works with 45mm integrated style forks or any other application Alloy cups ensure long life and serviceability Patented alignment tip for increased durability and performance TH brand 36 degree Micro Angular Contact Bearings (red seal) 7075/T6 alloy crown race Laser etched aluminum top cap For 1 1/8" size steerer tube Stack Height - 15.5 + 12.2 = 27.7mm Black anodized finish Weight - 111 grams (1 1/8")