Features1Compatible for M4050 M590 M610 SLX XT XTR and more. 2Aluminum alloy construction is corrosion resistant, solid and durable. 3Easy to install and tighten it only if you make sure the thread in alignment. 4Widely applied for various bikes. 5Wonderful part for replacing the old ones.SpecificationFeatures:Compatible for M4050 M590 M610 SLX XT XTR and more.Aluminum alloy construction is corrosion resistant, solid and durable.Easy to install and tighten it only if you make sure the thread in alignment.Widely applied for various bikes.Wonderful part for replacing the old ones.Specification: Material: Aluminum Alloy Color: Black, Silver(Optional) Compatibility: for M4050 M590 M610 SLX XT XTR and moreCenter to center Distance: Approx. 170mm / 6.7inWhole Dimensions( L * W): Approx. 22 * 4.5 * 3cm / 8.7 * 1.8 * 1.2in Weight: Approx. 266 - 271gPacking List: 1 x Bike Crank ArmPackage List