Truvativ Descendant 6Kal Eagle Dub Crank Strength and Durability The all-new Truvativ Descendant 6Kal Eagle Dub Crank 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. The Truvativ Descendant 6Kal Eagle Dub Crank is light enough for cross country racing, yet strong and durable enough for enduro and all-mountain riding. Features 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 Specs Arm material:Aluminum Chainring material:Steel Weight: 705g (175mm, 32t)Available arm lengths: 170mm, 175mm Compatibility: all levels of Eagle(TM) drivetrain systems, all major bottom bracket standards. Bolts:Direct mount Recommended chain:Eagle(TM) chain only Technology highlight(s): X-Sync(TM)2, Boost(TM), Eagle(TM)Options:Boost(TM), fat 4, fat 5 | Truvativ | Descendant 6Kal Eagle Dub Crank | Black | 175, 32, No Bb | Aluminum