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3Pcs Step Drill Bit: 1/8-1/2", 3/16-1/2", 1/4-3/4" (Metric Size is Available)
1Pcs Automatic Center Punch
Straight Flute (Spiral Flute is Available)
1. Step drill bits are perfect for drilling and enlarging multiple-holes in thin sections of sheet metals, pipes, plexiglass, plastics, wood up to a thickness of 5mm.
2. 135° Split Point Tip and Center Punch: increases cutting speed with self-centering and the drills do not run off center.
3. A variety of hole diameters can be drilled using only one tool.
4. The dimension of drilled hole is exact.
5. Two Flute Design: provides longer life and better chip removal.
6. Titanium coating provides up to 2 times the life over high speed steel.
7. Only for rotary use.
We Can Produce All Sizes of Step Drill Bits as Your Requirement ,Please Contact Us If You Need.
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