I just looked on the TA database site. They are cleat spikes. Thanks.
Leonard Bulger A^2 MI
Mark Bulgier wrote:
>
> Leonard Bulger wrote:
>
> > I came across some strange TA bolts. At first I thought they were chain
> > suck bolts: bolts that attach the ring to the crank, but stick out to
> > prevent the chain from getting wedged between the crankarm and
> > chainring. The strange thing about there bolts is that the ends are
> > sharp points.
>
> Sounds like cyclocross cleat spikes. TA did make 'em.
>
> Mark "Leonard's distant relative maybe?" Bulgier
> Seattle, Wa USA