SALIStep Drill Bits Set 1/4"-3/4",9 Sizes HSS M35 Four Spiral Flute Nano Blue Coated Cobalt Step Drill Bits Hole Expander for Hole Drilling in Stainless Steel, Copper, Aluminum, Wood, Plastic
Details
- MaterialHigh Speed
- Cutting Diameter0.75 Inches
- Finish TypeTitanium
- Shank TypeHex
- BrandSALI
Description
🔧 Drill smarter, not harder — the pro’s secret weapon!
- CUT LIKE BUTTER - Four spiral flutes ensure faster, smoother cuts with less vibration—professional-grade finish every time.
- UNMATCHED DURABILITY - Nano blue TiAlN coating and M35 cobalt steel deliver extreme hardness (89 HRC) for longer life and higher speeds.
- MULTI MATERIAL MASTERY - Perfect for stainless steel, copper, aluminum, wood, and plastic—your go-to for versatile, reliable hole drilling.
- PRECISION IN EVERY STEP - 9 versatile drill sizes cover all your hole-expanding needs from 1/4" to 3/4" effortlessly.
- SEAMLESS TOOL COMPATIBILITY - 1/4" hex shank fits snugly in all power tools, eliminating slippage and boosting your workflow efficiency.
The SALI Step Drill Bits Set features 9 step sizes from 1/4" to 3/4", crafted from M35 cobalt high-speed steel with a nano blue TiAlN coating for 89 HRC hardness. Its four spiral flute design guarantees faster, smoother drilling across stainless steel, copper, aluminum, wood, and plastic. The 1/4" hex shank ensures secure, slip-free tool compatibility, making it ideal for professionals and DIYers seeking precision and durability in hole expansion.
Reviews
T**S
Na
Works great
A**I
Cuts like buttah
I knew i was going to need a step drill for tougher materials like stainless and hot rolled steel. I had a job that defeated my yellow Ti coated HSS step drill - so I ordered this M35 Cobalt version and it cut through effortlessly.Some of the steps are shallower than others so for thicker materials you might have to come from both sides, or drill the desired hole size halfway through and clean up with a file or die grinder. Check the thickness of the step at size of your desired hole against the thickness of the material.On the plus side, this allows the step drill to be a shorter length - which in turn allows you to drill a larger hole without cutting through the other side of the tube. So this is a solution that does have a significant advantage if there is something on the other side you don't want to put a hole in.
A**
Good quality
Better than the plain brass ones
S**Y
Worked Great
Worked great for me and good value.
M**B
Nice bits
These look impressive. I have not used on metal yet. I normally use a 1/4 drill bit to start - once you whip the tip every use is frustrating.
P**1
Sub par!
Garbage, broke the first time I used it.
C**A
Average at best.
Looses edge VERY quickly. Was cutting two holes in soft wood. Bound up in middle of first hole.
J**
Great product!
I love how it looks. It holds the coating well. Cuts right through metal like butter!!! It doesn't overheat. They just need to correct the color label on the packaging. The multicolor is labeled black and the black is labeled multi ... lol. Great product. I plan on getting the other sizes now!
Common Questions
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