Sword Black 2×9 46/29 Wide Square Taper CranksetThe Sword Black 2x crankset brings gravel-oriented gear ratios, aesthetics, and chainline to a square taper bottom bracket platform. A wide 17t gap between chainrings extends your gear range to help you extend your ride no matter the terrain. It can be converted from 2x to 1x simply by installing a single chain retaining ring in the outer chainring position. Features. Compatible with 68x113mm JIS bottom bracket 110/80mm Asymmetric 4-bolt BCD Wide gear range designed to be used with Sword Black shifters and front derailleur Group Sword BlackSpeed 9-SpeedChainring Count 2x DoubleArm Length 165mm, 170mm, 172.5mm, 175mmChainring Size 46-29TChainline Wide 47mmChainring BCD 110/80 AsymmetricSpindle Interface Square Taper 68x113mmBB Shell Width Threaded 68mmChainring Material Steel small ring, Aluminum big ring