Photo 1 of 10 Inch Forstner Bit Extension Hole Saw Extension for 3/8" Drill Bit Extension,Adding Over 8-3/4 inches of Drilling Depth (10" for 3/8" Round Shank)

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Photo 1 of 10 Inch Forstner Bit Extension Hole Saw Extension for 3/8" Drill Bit Extension,Adding Over 8-3/4 inches of Drilling Depth (10" for 3/8" Round Shank)Photo 2 of 10 Inch Forstner Bit Extension Hole Saw Extension for 3/8" Drill Bit Extension,Adding Over 8-3/4 inches of Drilling Depth (10" for 3/8" Round Shank)