High-tension steel- Triple Sealed Mechanism- Caged ball bearings- Upper Stack Height: 20.3mm- Stack height 30.3mm- S.H.I.S. Stem Clamp Diameter: 25.4-24 tpi Quill- S.H.I.S Lower: EC30- Cups: 30mm- Crown Race: 26.4mm- Weight: 114g- Color: Silver (as pic. shown)- OEM package (This item is exactly as pictured and does not include retail package)