http://www.harborfreight.com/hole-sa... ampaign=2710B

Hole Saw Set on sale for $3.

I bought this set about 4 years ago. Yes, I have quite a few "Milwaukee" bi
metal cutters, but, this set has gotten me out of a pinch many, many times.
It has a lot of in-between sizes that I don't own and i carry it with me
when I go do volunteer repairs at friends homes. Just cut some holes in
vinyl siding the other day for electrical conduit. Cut hole in car
dashboard to help friend install gauges. Etc. Etc.

No, I have not tried them on metal, but for everyday 'occasional' holes this
compact little kit cannot be beat.

My $ 0.02

Ivan Vegvary