Comparison : Item # D419630469, HSS Spiral Flute Chucking Reamer, Fractional, Over and Under Sizes (USA)
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Item # D419630781, HSS Spiral Flute Chucking Reamer, Fractional, Over and Under Sizes (USA)
Item # D419630938, HSS Spiral Flute Chucking Reamer, Fractional, Over and Under Sizes (USA)
Item # D419631094, HSS Spiral Flute Chucking Reamer, Fractional, Over and Under Sizes (USA)