Extensible drill

Details Extensible drill Extensible drill

B - Operations, Transporting

23

B

77/33

B23B 51/00 (2006.01)

Patent

CA 1192063

ABSTRACT OF THE DISCLOSURE An extensible drill is provided herein. It includes separate drill members having different drill diameters, which can be assembled into a continuous drill combination of selected two or more of the drill members having a stepwise increasing diameter from the outermost drill member.

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