Microshift Sword 1x 42T Crankset Arm Length 170mmThe 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 our 2x chainrings. Features Wide design optimized for 50mm chainline 24mm spindle compatible with Shimano bottom brackets 1x chain-retaining ring works well with clutch derailleur Easy conversion from 2x to 1x Group Sword Speed 10-Speed Chainring Count 1x Single Arm Length 170mm Chainring Size 42T Chainline 50 mm Chainring BCD 110 Asymmetric Spindle Interface Standard 24mm BB Shell Width Press Fit 86.5mm, Threaded 68mm Chainring Material Aluminum Weight 810g (172.5mm)