Shimano Altus M311 Crankset with integrated chainguard. Specifications: ...
Number of Chainrings: Triple Chainline/Hub Compatibility: 135/142 MTB Hubs Spindle Interface Type: Square Taper JIS Defined Color List: Black Chainring BCD: Riveted Color: Black Crank Length (mm): 175 Crank Intended Use: Mountain ...