The Sword 1x crankset is designed for simplicity. With a single, chain-retaining ring mounted to the crankset's outer ring position, it pairs perfectly with the rest of the Sword 1x drivetrain to give you the stiffness, chain security, and ease of ownership you expect from a 1x drivetrain. It's designed to be as compatible as possible: the 24mm spindle is compatible with a ton of aftermarket bottom brackets, and it's easy to convert from a 1x to a 2x crank by simply installing microSHIFT Sword 2x chainrings. Wide design optimized for 50mm chainline. 24mm spindle compatible with bottom brackets. 1x chain-retaining ring works well with clutch derailleur. Easy conversion from 1x to 2x. Item Specifications: Rings: 40, Number of Chainrings: Single, Drivetrain Speeds: 10, Chainring BCD: 110 Asymmetric, Chainline/Hub Compatibility: 135/142 Road Disc Hubs> 415 mm Chainstay, Chainline/Hub Compatibility: 135/142 MTB Hubs, Color: Gray, Crank Length (mm): 170, Crank Intended Use: Gravel, Weight: 790, BB Included: No, Pedal Spindle: 9/16", Spindle Interface Type: Hollowtech II, Defined Color: Gray,