【Easy Installation】: The bike crank bolt is easy to install by using the british 3/8 hex wrench(not included), which is a wonderful replacement part for your broken or old ones. 【Scope of Applications】: The bicycle crank bolt is applied for 590 596 XT XTR SLX crankset. And there are several colors for you to choose, which also can update your bike. 【Product Specification】: Fitment: for 590 596 XT XTR SLX; outer diameter: approx. 28mm / 1.1in; inner diameter: approx. 10mm / 0.4in; thread diameter: approx. 20mm / 0.8in; thread length: approx. 12mm / 0.5in. 【Premium Quality】: This 100% brand new crank bolt is made of high quality aluminum alloy material, which is anti-rust and corrosion resistant, sturdy and durable. It is not easily damaged, has reliable quality and ensures high strength for long lasting usage. 【Guarantee】: Our product have 180 days warranty, if you have any question about this bike crank bolt, please feel free to contact us, we will try our best to help you solve your problem., Weight: 0.0220462262 pounds, Manufacturer: Keenso