The blade width is the important part. Buy one that is slightly longer and bend it to have an offset in it.
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Nice for getting into tight places.
An angled one is also good.
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Real picture here:
http://www.newark.com/wago/210-658/o...ort/dp/79K2417
Since they are cheap at your local cheap tool place it won't hurt to make a few of them....
..... mostly since they seem to sprout little feet and walk off.