Neiko 10197A Titanium Step Drill Bit Set, High Speed Steel | 5-Piece Set | Total 50 Sizes Price: $21.56 (as of 27/11/2020 05:33 PST- Details)

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Classic high speed steel with titanium coating for proven capability and durability in drilling holes in plastic, aluminum, copper, stainless steel and many other types of sheet metal
135° split point and two flute design increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily