The SRAM GX Eagle DUB crankset delivers consistent performance every time out. Now everyone can benefit from a new measure of durability SRAM DUB technology creates a lighter, stiffer and stronger crankset Optimized 7000 series forged aluminum arms Included direct mount X-SYNC 2 chainring provides significantly quieter performance, with better mud clearing and durability Chainring is designed specifically for Eagle chains and drivetrains DUB compatible bottom bracket sold separately 49.0mm chainline Pedal Spindle: 9/16" BB Included: No Chainring BCD: Direct Mount SRAM Crank Intended Use: Mountain Number of Chainrings: Chain Retaining Single Rings: 32 Drivetrain Speeds: 12 Spindle Interface Type: SRAM DUB Chainline/Hub Compatibility: 135/142 MTB Hubs