THM-Carbones Clavicula SE ultralight high module carbon fiber cranks. With only 295 grams are the lightest in the world but also with a great stiffness and reliability due to clever design and high quality materials and manifacturing. Available in 110 mm compact BCD and 130 mm standard BCD both, 170-172.5-175 mm cranks lenght. Oversize 30 mm axle compatible with most BB shell standards. Low 148 mm Q-factor. Carbon fiber natural finish (gloss or matte). 100% Made in Germany. Absolutely a must to have for any top level road bike!