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 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 1x Number of Chainrings: Double Pedal Spindle: 9/16" Crank Intended Use: Gravel Chainline/Hub Compatibility: 135/142 Road Disc Hubs > 415mm Chainstay, 135/142 MTB Hubs Rings: choose; 46/29t, or 48/31t Chainring Material: Steel small ring, Aluminum big ring Spindle Interface Type: Standard 24mm Drivetrain Speeds: 10 Chainring BCD: 110/80 Asymmetric BB Included: No (sold separately) Weight: 925g. (46/29t x 172.5)