<ul><li>HOLLOW INTEGRATED BIKE CRANKSETcrankarm length: 170mm. Suitable for mountain bikes, road bikes, etc.</li><li>104BCD: Outer Circle: 104mm(4.09in), Inner Circle: 64mm(2.52in). Compatible with single, dual, triple discs.</li><li>HIGH STRENGTH ALUMINUM ALLOY: Strong and impact resistant, uniform force and smooth riding, strong compatibility, has a long service life.</li><li>Compatible with most pedals, which can be selected to suit your needs.</li><li>PACKAGING INCLUDEScrank arms, screws. Please check the size you need before buying.</li></ul> 104BCD HOLLOW INTEGRATED MOUNTAIN BIKE CRANKSET Material: Alloy Aluminum Crank length: 170mm Shaft length: 118mm Shaft outer diameter: 24mm BCD: Outer Circle: 104mm(4.09in), Inner Circle: 64mm(2.52in). Support frame bottom bracket: 68 73mm thread BB Package Includes: Crank Arms (including left right crankarms and screws) Note: If you have any problem before or after purchase, feel free to contact us.

LSRRYD Crank Arm Set for Mountain Bike Road Bike 170mm 104BCD Bicycle Aluminium Crankset Hollow Intergated Crank Set (Color : Gold, Size : 170mm)