When Eagle was first released price was a significant barrier. This has changed over the past few years as Eagle technology has expanded to NX level making the significant benefits of the 12-speed group available at the lowest price to date. NX Eagle DUB cranks are made from 6000 series aluminum which ensures durability. It uses X-Sync 2 chainrings from SRAM ensuring silent operation Smooth gear shifting and reliable chain retention. This version comes with a 3mm offset sprocket for a 12 x 148mm Boost distance. It features a DUB spindle which provides better rigidity than GXP and lighter weight than BB30 and compatible with almost any frame if you have purchased the correct DUB carriage.