... ~M22 Application:motorcycle Material:pure or alloy titanium titanium chain ring bolt a, Bolt sizes:M3-M22*length5mm~160mm b, Nut ... ): Power TransmissionD:Square thread (90 degrees): Power TransmissionHead CodeFlat,Oval,Round,Pan,Truss,Hex,Button,Binding,Chese,Fillister,flangeDrive codeA:Slotted ... future if you are interested in any item. titanium chain ring bolt