They are Compact (BCD 110). The serial number on the right crank arm, which indicates the version, is > 18550, therefore it corresponds to the latest version released by THM in mid-2025, which is adapted for 12-speed. They are completely new. Purchased according to the invoice on December 17, 2025. They arrived in January. I used them for 3 days and then I got injured. My usual size was 170 mm and my tendon did not handle the change. To avoid relapses, I bought the 170 mm ones and am selling these, which are practically brand new. If you are going to change your crank length, I advise you to t...