I have a new Sram Red Quarq powermeter crank.

Crank arms are 172.5mm and Quarq is 110bcd for 50/34 chainrings.

I have some Sram Red chainrings that have 100 miles on them that I bolted to the cranks.

I decided to get a Quarq to work with my Specialized crank instead, so I don’t need these.

$700 shipped.