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Titanium Step Drill Bit - 3Pcs HSS Drill Cone Bits for Sheet Metal Hole Drilling Cutting, Multi Size Step Bit Hole Stepped Up Unibit for Electrician
Specification of Our Step Drill Bit :
Bit #1 (6 steps): 3/16", 1/4", 5/16", 3/8", 7/16", 1/2"
Bit #2 (13 steps): 1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2"
Bit #3 (9 steps): 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4".
Our step drill bit set includes 3pcs individual drill bits, 28 Size. 1/8"- 1/2", 3/16"- 1/2", 1/4"- 3/4". Split point tip design provides faster and smoother cutting, increase the wear resistance. HSS along with titanium coating ensures the stepped drill bits stay sharp for years, perfect to drill holes on plastic, wood, sheet metal, steel and other surfaces, Suitable for home DIY lovers.
Step Drill Bit, Step Drill Bits, Cone Drill Bit, Unibit Step Drill Bit, Step Bit for Hole Drilling
Unique Two Flute Design
Two Flute Design also lets the material particles escape easily for a much more clean drilling operation. Industry grade High Speed Steel with titanium coating can reduce friction and run cooler, which ensures wear-resistance and durability.
Hex Shank
Each unibit step drill bit optimally fits into power tools such as impact drill chucks securely and eliminates slip for higher efficiency of output.
Wide Application
with the cone drill bit, you may easily drill different kinds of holes on sheet metal, aluminum sheets, wood chips, plastic and wood board. It’s a perfect choice for DIY and engineering use.
WESIII
Reviewed in the United States on February 27, 2025
For the price they work I guess. What these are for is if you need to drill a couple holes and don’t want to spend money on a decent step bit.I was able to drill two holes in stainless and almost two in sheet steel before one stopped cutting in sheet steel. Went to the other narrow bit with more steps on it and was able to complete the hole, but immediately I felt like it wasn’t as sharp as the first. I never tried the big triangle one. What was weird is it cut the stainless like butter and seemed to quit on the sheet steel. Maybe the two stainless holes dulled it, but that doesn’t explain the second not really cutting the sheet steel without some effort. Also the coating wore off pretty quick.Lesson here is just because something looks like something else that doesn’t mean it is the same. For cheap step bits I still like HF and I have never owned a serious high dollar quality step bit so I can’t comment on those.3 stars for me meaning average.
J. Diviner
Reviewed in the United States on February 24, 2025
Useful to have, could replace many individual bits when drilling thinner metal sheets.
Robert and Lisa
Reviewed in the United States on February 20, 2025
Quality is great, very sharp!
Popcorn maniac
Reviewed in the United States on February 18, 2025
Of good quality, very handy.
Dan Southard
Reviewed in the United States on February 15, 2025
These are really good. Cut through aluminum 1/2" thick like butter. I drilled a 1/4" plate steel piece with the same results. Remember to add oil to keep them sharp longer. I give 👍🏼👍🏼👍🏼
glenn
Reviewed in the United States on January 10, 2025
Using these is much easier than a single drill bit of one diameter. For use in a hand drill or heavy larger drill press. Particularly for softer materials I can use a chuck with a handle to open a much smaller pilot hole by hand into that finished ID. The steps tell you when you've reached the right diameter. I have several of these already, but they're in other tool boxes and so convenient I purchased some more. So useful I might even get a few more so I never have to spend hours trying to find one!
B.W. Behling
Reviewed in the United States on November 1, 2024
I needed to make a 3/4" hole in an electrical box and couldn't find my 3/4 hole saw so I bought these thinking that they'd be useful for other things too. Yeah, no. Getting any of them to start cutting on the steel box, even with a punch mark, was a struggle. When I did, the first one stopped cutting at all while transitioning from 3/8" to 7/16". No matter what I did it just would not drill any deeper (yes, the box was empty and deep enough) so I switched to one of the others. It too quickly dulled and refused to drill the 7/16" hole. I tried the third at that point, not expecting good results, and it too dulled, got hot, and refused to drill the 7/16" hole. No, the box is not some wild super steel, just a plain old steel waterproof electrical box. What a waste of money these were!
teachmcd
Reviewed in the United States on October 12, 2024
I have fallen in love with this style of drill bit. These work especially well in metal. Heavy oil well drill stem is thick and tough... (gate posts) not too tough for these bits. Shipping container needed holes for hanging heavy items on the inside. Perfect for making right size bolt holes. Neat and clean. So versatile for drilling in many materials.
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