1.5" / 1-1/8" tapered steerer
Upper: 36degree/ 45degree ACB
Lower: 7/32" caged ball bearings
For 55mm OD headtube
For tapered fork steerer 1.5" to 1-1/8"
Alloy upper cup with Angular Contact Bearings (Blue seal)
CNC machined lower cup with 7/32"x20 caged ball bearings
Stack Height 6.3+11.7=18mm

Spares:
Top Bearing: 160-6460
Bottom Bearing: MR068
Crown Race: H6050

Size Tapered Steerer
Weight 151g