The Sword Black 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. Sword Black cranks are suitable for use with a square taper bottom bracket axle (not included). This crank uses the same chainring standards as the original Sword, but adds a new lower price point. Â Easy to convert from a 2x to a 1x crank by installing a single chain-retaining ring in the outer position