MY-A641+ - Model: MY-A641+ - Crank Material: Forged AL-6061-T6 - Finish: Black sand anodized - Chainrings Gear: 28/38/48T - Inner-Centre: Steel,Silver - Outer: Steel,BED - Spider: Black - Chainguard: Smoke - Chainline: 48.5mm - B.B. Taper square: 126mm