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