This is a Cane Creek Headset 40 Bearing with a 1-1/4" size and 45x45° contact.
Features:
- 40-series crown races are cross compatible with all series headsets
- Zinc-plated
Specifications:
Fits Model: ZN 40 (47mm) bearing
Size: 1-1/4" (Italian integrated 45x45)
Note: This is a single bearing