The Sword 2x crankset is designed for climbing. The two chainrings have a 17t gap between them, so you get a lower gear range than competitive cranks while still having high gears to push the pace downhill. And it's designed to be as compatible and easy to own as possible: the 24mm spindle is compatible with a ton of aftermarket bottom brackets, and it's easy to convert from a 2x to a 1x crank by installing a single chain-retaining ring in the outer position.Features-Wide design optimized for 47mm chainline-24mm spindle compatible with Shimano bottom brackets-Wider gear range designed to work with Sword front derailleur and shifters-Easy conversion from 2x to 1xItem Specifications-Color:Gray-Rings:46/29-Number of Chainrings:Double-Crank Length (mm):172.5-Crank Intended Use:Gravel-Drivetrain Speeds:10-Weight:925-BB Included:No-Pedal Spindle:9/16"-Spindle Interface Type:Shimano Hollowtech II-Chainring BCD:110 Shimano Asymmetric-Chainring BCD:80-Chainline/Hub Compatibility:135/142 Road Disc Hubs > 415 mm Chainstay-Chainline/Hub Compatibility:135/142 MTB Hubs-Defined Color:Gray