+ Niobium-enhanced aluminum
+ ERD: 533/595
+ Single eyelets
+ 650b and 700c sizes
+ 23.7mm external width x 17.5mm internal width x 19.5mm deep
+ 480 grams (29"/700c), 450g (27/5"/650b)
+ 32 and 36h
+ Black anodized
What is Niobium-enhanced aluminum?
It used to be difficult to alloy Niobium and Aluminum together, because of their vastly different melting points.
But now that has been figured out, cyclists have a new alloy with nearly double the tensile strength and a finer grain structure over conventional aluminum. A special T10 process where the rim is cooled from an elevated temperature shaping process, cold worked and then artificially aged, is applied to our premium rims.