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Your cart is empty.Product Description
High Durability & Universal Use
Cortool Industry-grade High Speed Steel (60HRC) with titanium coating can reduce friction and run cooler, which ensures prolonged wear-resistance and durability. Cortool 5PCS step drill bits are compatible with majority brands of electric drills or bench drills on the market. Easy to store in toolbox or pocket.
Precision Drilling
Cortool step drill bit has 118° Split Point which provides fast cutting with 3-Flat Shank provides fast and precise cutting while prevents walking and shedding; Laser calibration offers accurate positioning assistance. Cortool step drill bits are built with double flutes design clears particles quickly, decreases friction and heat for a faster, cooler and clean drilling performance.
Professioanl Packaging
Cortool step drill bit has aluminium case which provides strong protection to our products.
David
2025-08-30 16:28:06
Used it to cut a hole in a large pvc pipe cap. Worked great just go slowly.
Ace
2025-08-08 12:53:10
Awesome quality for the price!I had no problem cutting a 7/8 inch hole into metal.
Ed M.
2025-08-04 17:56:51
Unlike some others I found this step drill to be perfectly adequate for enlarging holes. I used it to enlarge a hole to 3/4" in a 3/16" mild steel engine mount bracket with no problems or dulling of the drill. As with any drill you need to take time, go slowly and use adequate oil to avoid overheating the drill and work.However... this drill may have problems with STAINLESS steel since stainless tends to display something known as "work hardening" where the contant area of the stainless gets progressively harder as more heat and pressure is put on the drill bit, to the point where if becomes almost impossible to drill. To drill or cut stainless you need to use a low speed drill and lots of oil. I suspect the folks who had problems with this drill becomming hot and dull were just using too much speed and pressure and overheated the work. And as the drilling became more difficult, just increased speed and pressure. Go slow, use oil, have no problems.
MICHAEL G.
2025-07-26 14:16:39
This bit bores through wood, Plexiglas, and metal like butter. With Plexiglass, medium speed and there will be no webbing or cracking.With metal, medium to high speed, maybe with some 3-In-1.Definitely a valuable addition to my tool arsenal.
IZNUNYABIZNIZ
2025-07-08 11:26:02
fantastic tool if your a electrician and need to install fittings on power boxes or any thin sheet metal device
L Ogawa
2025-05-31 10:11:23
I needed to drill perfect sized holes for a battery block I was building. With this step drill I sized the holes perfectly. Great bit to add to your arsenal. So easy to use and the price was "priceless."
Mike
2025-03-10 14:13:40
These were the worst step bits I have ever tried to use in my life
Donald W.
2025-03-09 12:29:09
Works great but doesn’t last very long as far as sharp goes especially on steel or iron
Gene I
2025-02-17 18:48:30
Make certain you use a variable speed drill on first slow setting. 3 in One oil should be used. You’ll burn out the tip if you use high speed drill
Stan M.
2025-01-12 16:38:34
Worked really well, was quite surprised, but very happy. Would buy again if needed
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