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Combination Core Drill/Reamers

Combination valve guide core drill reamers allow you to eliminate the two step process of drilling then reaming to replace valve guides. High quality HSS construction for long life. A single pass will size the valve guide bore to 1/2" for press fitting of new 1/2" OD valve guide inserts. Select the appropriate tool shank diameter and shape for your Guide and Seat Machine.
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