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Four Spiral Flute M35 Step Drill Bit Set 1/4'-1'(3 pcs 30 Sizes), 1/4' Shank for Metal Step Drill bit, Impact Resistant Cobalt Step Drill Bit, for Stainless Steel, Wood, Aluminum, Plastic

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$76.99

$ 30 .99 $30.99

In Stock

About this item

  • 【M35 Cobalt Superhard High Speed Steel】: ISI M35/1.3243/SKH55/M35 steel is a kind of high speed steel containing cobalt, which has the characteristics of high wear resistance, high pressure resistance and sintering resistance. Ideal for steel and plastic drilling with high-speed cordless drills.
  • 【100 extra-long warranty period】：If you have any questions about the product, please contact us and we will answer you within 12 hours. If the hexagonal handle breaks, refund or replace for 100% .
  • 【Unibit step drill bit compatibility 】：Unibit step drill bit can quickly and smoothly drill holes of different diameters, such as stainless steel, aluminum, wood, plastic board (the board must be thinner than the height of the step drill).
  • 【M35 four spiral groove】: Step drill bit for metal four cutting blade design. Faster, smoother cutting and easier separation of sawdust.The service life is twice that of ordinary ladder drills, the drilling accuracy is significantly improved, the cutting speed is faster when drilling, and it has a unique effect on stainless steel drilling.
  • 【30 Sizes :Including】:Step bit 1/8”-1” 9 Sizes，1/4" - 1-1/8” 15 Sizes，3/16”-1/2” 6 Sizes，step bits For your everyday DIY needs.
  • 【TiAlN】:TiAlN coating is a new coating material in recent two years.ndustrial-grade construction ensures durability and longevity It has high hardness, high oxidation temperature, good thermal hardness, strong adhesion, low friction coefficient and low thermal conductivity coefficient.


Product Description

step bit
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked.
step bit
step bit

  • Yes, this is M35 material, the step drill into the drill or drill press. Determine the hole size you need, and then drill a step drill into the hole until you need the diameter of the hole.

  • step drills work faster and harder than conventional drills. Using a conventional drill is like screwing through. There is no step drill, besides, it needs more oil for a conventional drill.

  • The saw blades are made of M35 steel and require you to make a pilot hole in the 20g steel for the first time. Use Some Lube. It works great! The effect will be better than the performance of ordinary groove more effective.

  • it's made in China. If you want to make it in the United States, it must be more than $69.99. Try buying american-made for $100 or more. You'll have to pay more, but there will be no necessary expenses, and the results will be the same.

  • These are very high quality M35 step drills. I've drilled almost three hundred holes in a variety of materials, from mild steel to various types of steel or wood, and I'm still very sharp!


S & W Trucking
2025-08-22 16:16:34
Good quality and arrived on time.
Lacey & Ken
2025-06-26 11:42:52
I had a pipe I was trying to feed through a joist and my original hole was slightly mid-aligned. This bit on a long extension not only widened the hole enough to get through the block, but also ream the end of the pipe that started to mushroom out. I used it a lot. High speed, low speed, improperly, sideways… never broke and hasn’t shown signs of dulling. Since its initial use on some 5/8” pipe, I’ve used it to make some 3/4” holes in some c-channel steel strut and widen some #10 holes to accept some 1/4-20 screws.
William Krueger
2025-05-31 12:11:13
I was opening up a 3/4" hole in 1/4" aluminum to 1". It did the job but it wasn't as clean as I would have liked. Perhaps that was the result of my technique (rotational speed, lubricant etc.)
Alvaro Enrique Rios Tovar
2025-05-25 13:24:35
Useful and wonderful
link
2025-05-13 12:37:27
rips through electrical panel hope it lasts long great tool .
Robert Siegrist
2025-05-11 17:41:25
Yes yes yes the best uni-bit/ step up bit!!!! I use this weekly, sometimes daily and it’s the best one on the job site! Commercial construction 100% 10/10
Jay
2025-01-14 10:12:06
The case it comes in is cool but they’re hard to take out at first. 3 unibits for the price of one name brand is a steal. Sharp as hell out the box absolutely ripped thru the duct work. Highly recommend 💯.
Doc Stehr
2025-01-03 14:20:58
Barely does the job on steel drum. Dulls quickly