The Cane Creek 110 Crown Race is made from aluminium alloy for light weight and also features a dual lipped seal to ensure your bearings stay nice and clean.
Alloy - 52/30 - For 1 1/8th Steerers is Cane Creek Part Number BAA0463A. This is works with any Cane Creek Bearing that has a 52mm Outside Diameter and a 40mm Inside Diameter, and you want to run it with a 1 1/8th steerered fork (that will have a 30mm crown seat diameter). These are commonly referred to as "reducing crown races".
Alloy - 52/40 - For 1.5 Or Tapered Steerers is Cane Creek Part Number BAA0173A. This is works with any Cane Creek Bearing that has a 52mm Outside Diameter and a 40mm Inside Diameter, and you want to run it with a 1.5" or Tapered steerered fork (that will have a 40mm crown seat diameter).
The 110 Series Crown races are cross compatible across the whole Cane Creek line up, so they will fit on to a 10 or Forty series headset too. If you'd rather a steel crown race, you can check out the Forty Series Races here.
If you'd like more info on which size you need - check out our blog post on headsets here.