Full-integrated headset- For 1-1/8" upper ,1.5" bottom steerer- For different outerdiameter head tube- 6061/T6 cnc machined top cover with seals- 7075/T6 cnc machined crown race (inner diameter 39. 8mm)- Upper: angular contact sealed bearing- Lower: super oversize angular contact sealed bearing- Size: 1.5" Head Tube Reduced to 1-1/8" Fork Tube Threadless Headset- ACB Sealed- Bearing: NHB-6B & NHB-15 - Stack Height: 8.7+1.1=9.8mm 1mm- Weight: 101g (include Alloy top cap) - Color: Black (as pic. shown)- Made in TAIWANContent: 1 set (With top cap and starnut) / pack