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Source for long drill bits in S.F. Bay Area ?

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I need a little help.

Does anyone know of a source for long drill bits in the San Francisco Bay Area?  I mean to drill holes in existing concrete for new anchor rods to be epoxy-grouted into for residential earthquake retrofits, say 1" to 1-1/4" diameter up to about 30" or 36" long?

TIA,

Ralph



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