Shimano Altus FC-M311 Cranksets

• Hyperdrive SG-X chainrings
• Chainguard integrated design
• BB Included: No
• Chainline/Hub Compatibility: 135/142 MTB Hubs
• Chainring BCD: Riveted
• Color: Black
• Crank Intended Use: Mountain
• Crank Length (mm): 170
• Defined Color: Black
• Drivetrain Speeds: 7
• Drivetrain Speeds: 8
• Number of Chainrings: Triple
• Pedal Spindle: 9/16″
• Rings: 28/38/48
• Rings: 48/38/28
• Spindle Interface Type: Square Taper JIS