CNC machined steel cups, oversized retainer bearings and sized for a 1.5in steerer – The Orbit DL 1.5 Reducer is designed for abuse. Choose the Orbit DL and it won’t let you down.
— 1-1/8in, retainer bearings
— For 49.55mm ID head tube
— For 1.5in sized head tube and 1-1/8in steerer
— Reduction design
— CNC machined steel cups
— Super oversized diameter 7/32in x 20 retainer bearings
— Stack Height 17+11.7=28.7mm
— Weight 387g
FSA Part number 101-1250
Not sure if this is the one you need?
Check out the handy FSA Headset ID Tool here http://www.fsaeasyheadset.com/