Originally Posted by mike

Elitists will tell you that the "dork disc" is not needed, but remember this term was probably invented by a 15 year old back in 1981. These same people will insist that you wear a helmet for safety, but in the same breath tell you that it is absolutely ridiculous to use a spoke protector.

I know how to set derailure stops correctly and STILL, have had derailures get into my spokes - breaking spokes, ruining my tour, destroying the derailure...

I think they serve their purpose. At the same time, I am not sure where to get them anymore.

Let's put it this way, if you have to ask, chances are you don't have the tools to remove the freewheel and replace the spoke protector disc. Your best option is to bring it to a bike shop and have them replace it. If they give you the "you don't need it" speech, say, "Ya, I know.... can you put it on anyway".