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Hollow Ring Centre (RC516HC)

Hollow Ring Centre (RC516HC)

Robert Sorby

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For hollow boring, it allows a 5/16 shell auger to feed through precisely ensuring accurate boring.

Robert Sorby's own words, read from their page.

Buy from Robert Sorby LtdPrice seen 2026-09-05. Not an affiliate link, we earn nothing from it.

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The part other shops don't tell you. Three separate questions, kept separate on purpose, each with its source.