Truvativ Descendant Carbon Eagle Dub Crankset The all-new Truvativ Descendant Carbon Eagle Dub Crankset features SRAM's new DUB(TM) technology, which is a reinvented spindle design that provides you with compatibility with all major bottom bracket standards. It also allows for a more uniform approach to bottom bracket fitment, better sealing against contamination and forward and backward compatibility. It also utilizes a proprietary TRUVATIV carbon construction process that delivers you a crankset light enough for cross country racing, yet strong and durable enough for enduro and all-mountain riding. Features Carbon construction for lightweight durability DUB(TM) technology features a uniform approach to bottom bracket fitment, better sealing against contamination and is forward and backward compatible Fully compatible with any 1x drivetrain DUB(TM) technology features a uniform approach to bottom bracket fitment, better sealing against contamination and is forward and backward compatible Specs Arm material: Carbonchainring material: aluminum cold forged eagle(TM)Weight: 555g (175mm, 32t)Available arm lengths: 170mm, 175mmcompatibility: all levels of eagle(TM) drivetrain systems, all major bottom bracket standards. Bolts: direct mountrecommended chain: eagle(TM) chain only Technology highlight(s): X-sync(TM)2, boost(TM), eagle(TM)NON-BOOST CRANKSET | Truvativ | Descendant C Eagle Dub Crankset | Black | 175, 32, No Bb, Non-Boost