• Forged and CNC machined 6061/T6 aluminium cups
• Patented alignment tip for increased durability and performance
• TH Brand 36 degree Angular Contact sealed bearings
• 7075 alloy crown race
• Laser etched aluminium top cap
• FSA Part Number 101-0500

Not sure if this is the one you need?
Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/