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 percent New Material: Aluminum Alloy Color: Black, Silver(Optional) Compatibility: for M4050 M590 M610 SLX XT XTR and more Center to center Distance: Approx. 170mm or 6.7in Whole Dimensions( L x W): Approx. 22 x 4.5 x 3cm or 8.7 x 1.8 x 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. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.