The SRAM SX Eagle X-Sync Powerspline Crankset features similar chain retention performance as seen in all of the higher-level Eagle drivetrain cranks but at a lower price.  SRAM SX Eagle X-Sync Powerspline Crankset Features All new fully featured Eagle crankset. Now offering more Eagle™ options than ever before DUB technology option. Steel Eagle™ direct mount ring — as seen on NX Eagle™ For Powerspline cranks, use 118/73 Powerspline Bottom Brackets SRAM SX Eagle X-Sync Powerspline Crankset Specifications Speeds: 11/12 BB Compatibility: PowerSpline BB Chainring Size: 32 Crank arm length: 165mm, 170mm, 175mm Chainline: 49.0mm BB Spindle Interface: Power Spline Chainring material: Steel Guard: No Guard Bolt Circle Diameter (BCD): Direct Mount (DM) Crank arm material: Aluminum