SHIMANO FC-M410 Alivio 7/8sp crankset, JIS-104x175mm black Crank/FD is mountain type with Crankarm length of 175 millimeter Interface: JIS Square Taper Spindle Length measures 113 millimeter and Pedal Spindle is 9/16-Inch Features a Riveted Bolt Pattern, and Chainring BCD is 64,104 millimeter, and rings are 22-32-42 Includes speed of 7/8sp and arm length is 170 millimeter