Features: 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: Condition: 100% New Material: Aluminum Alloy Color: Black, Silver(Optional) Compatibility: for M4050 M590 M610 SLX XT XTR and more Center to center Distance: Approx. 170mm / 6.7in Whole Dimensions( L * W): Approx. 22 * 4.5 * 3cm / 8.7 * 1.8 * 1.2in Weight: Approx. 266 - 271g Packing List: 1 x Bike Crank Arm .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Compatible 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.