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MABLEVI M35 Four Spiral Flute Cobalt Step Drill Bit Set 1/8'-7/8', Wear-Resistant TiAlN Coated 1/4' Hex Shank Unibit Step Bit for Metal, Stainless Steel, Aluminum, Wood, Plastic(3Pcs)

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$43.97

$ 22 .99 $22.99

In Stock

About this item

  • FOUR CUTTING BLADE UP TO 4X FASTER - Ordinary step drills are prone to deflection during cutting, four cutting blade design guarantees a faster and smoother cutting, allows swarf escape easily.
  • ULTRA TiAlN COATING UP TO 10X LONGER LIFE - TiAlN coating has excellent characteristics. As a new coating material, which can minimize the wear of the drill bit during each drilling process.
  • M35 COBALT PREMIUM STEP BIT - M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high red hardness, high wear resistance and sintering resistance. M35 cobalt can obtain high hardness (HRC 64-66) through proper heat treatment.
  • 34 TOTAL STEP SIZE - Includes 3 bits with 1/8" - 1/2", 1/4" - 3/4", 3/16" - 7/8". Perfect for Stainless Steel/Metal Sheet/Wood/Plastic/Aluminum Sheet/Copper and other metal sheets.
  • RELIABLE BRAND - Bring you the pleasure of cutting butter blocks. If the hex shank snap off, MABLEVI will repair and replace any defect, without charge, and without waiting.



Product Description

step bits for metal

Effective Step Size

1/8"-1/2" (13 step size) : 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"

1/4"-3/4" (9 step size) : 1/4", 5/16", 3/8",7/16", 1/2", 9/16", 5/8", 11/16", 3/4"

3/16"-7/8" (12 step size) : 3/16",1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8"

The step drill bit set is compatible with the majority of brands of electric drills or bench drills on the market. It comes with a tool kit, which is easy to store and carry.

unibit step drill bit
metal drill bits for steel
metal drill bits for steel
step drill bit set

djpavao
2025-08-29 19:21:41
Was what I wanted
Richard H.
2025-06-22 11:13:39
worked as described
Jersey John
2025-06-18 18:59:27
Liked having 1/4" shaft and snap on capabilities.Liked getting a case for the bits.Disliked markings are not white and difficult to read, and the steps seem too shallow.
Brad N
2025-06-06 16:10:09
I've only used a few times so far but they are ridiculously Sharp and hold an edge
Jordon Musser
2025-05-14 18:50:16
Stays sharp and drill great. Very happy with the product and even after I broke one (my fault!) they helped me out.
cvtkid
2025-02-16 17:50:26
Like the tool, but if you move , the tip of the drill breaks off. Way too long and is fragile. In a drill press it was fine. In a hand held drill, tip does break off. When the drill is new, it grabs the part. Need some relief on the tip.ok tool
JWill
2025-01-14 10:49:17
I have had every single one of these break in mild steel, all the same way, and because they split in half, it's plain to see that they are chinesium and not Cobalt. I would be shocked if they contained any cobalt whatsoever. Every one of them would heat up at about 50% of the bit and the bit would struggle, as I would rock it to get it to bite, it would bite, and then snap. These things are grade a junk. When I find them again, I will post pictures, they are an alloy blended something, but certainly not quality.
roger d.rowe
2025-01-04 17:58:18
well worth the money, and is holding up to use very well
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