Features1Aluminum alloy construction is solid, incredibly strong and lightweight. 2CNC machining improves the strength and rigidity. 3Hollow-out design for reduced weight without sacrificing the strength.SpecificationFeatures:Aluminum alloy construction is solid, incredibly strong and lightweight.CNC machining improves the strength and rigidity.Hollow-out design for reduced weight without sacrificing the strength.Threaded bottom bracket, with good sealing and low noise.Bottom Bracket Width: 68-73mm. BCD: 130mm. Crank Arm Length: 170mm.Great replacement parts for folding bikes.Specifications:Material: Aluminum alloyBCD: 130mmCrank Length: 170mmSpindle: 115mmBottom Bracket Width: 68-73mmCrank Weight: Approx. 473gTotal Weight: Approx. 1000gPackage List:1 * Crank Arm Set1 * Bottom Bracket5 * Bolts1 * Crank Screw1 * Crankset Bolt Allen Wrench3 * Resin GasketsPackage List1 * Crank Arm Set1 * Bottom Bracket5 * Bolts1 * Crank Screw1 * Crankset Bolt Allen Wrench3 * Resin Gaskets