The Shimano FC-M8130-1 Deore XT 12 Speed Crankset 175 is a reliable and lightweight crankset. It has an anodized finish and is compatible with an outboard BB type. It has 4 gear arms and is part of the XT M8100 series. It is available in 165, 170, and 175 crank arm lengths and does not include a chainring. The crankset is made of aluminum and has an average weight of 636g.