NEIKO 10185A Titanium Step Drill Bit, High-Speed Alloy-Steel Bit, Hole Expander for Wood and Metal, 12 Step Sizes from 3/16 Inch to 7/8 Inch

This step drill bit arrived brand-new in a sealed blister pack. I used it to cut two 3/4" holes in a thin stainless steel screw-on jar lid for a special project. I taped the lid to a piece of scrap wood using Gorilla tape so it wouldn't spin out of control as I drilled it. I started each hole with a 3/16" standard bit.The shank fit into my 1/2" Ryobi rechargeable drill chuck with no problem. The bit dug in with only moderate pressure needed and quickly increased the hole to a full 3/4". The opposite side of the stainless had loads of burrs and thin metal strips still attached, but by using a pair of needle-nose pliers I was able to pull it all off leaving a neat, but sharp, edge.I feel confident that this step drill bit will work very well cutting through thin metals, wood and plastics, but I cannot say one way or the other how well it could deal with thicker metal, such as with a sink or electrical junction box, etc. Cutting any metal with substantial thickness should only be done slowly and with some sort of cooling liquid to prevent overheating of the bit and the material being cut because even cutting this thin stainless heated the bit more than I'd expected.By the way, this is NOT made of titanium! The title and description are misleading. It is supposedly coated with it, but it wears off the first time it is used to drill through even thin metal. That being said, the underlying high speed steel seems up to the task.Based on my particular light-duty use for this step drill bit, I do recommend it.

We used this to enlarge a ½ inch hole to 1 inch in diameter in 3/8 inch thick tempered steel.It worked great.We had a steel plate with a 1/2 inch hole in it, welded to the front end of the frame on a 1994 pathfinder, to hold the tension/compression rod and rubber bushings (assembly) in place. After installation we determined that we needed to enlarge the hole to allow the assembly to "wiggle" a bit since the new steel plate was not in the same location as the old one. We used this step drill to gradually increase the hole size to 1 inch, which turned out to be the perfect size to allow the assembly to be held in place but to also allow them to wiggle just a little bit. Anyone who has had to work on old stuff will appreciate the flexibility that a stepped drill bit gives you. We did not have to buy a whole set of bits to do this job.We could barely see any wear on the bit after using it twice; once for the right side and once for the left side. This is not some cheap bit.We have used other (cheap) bits in steel and had to sharpen them after one use. Not the case with this one.

Bought this to drill four holes in the 1/16th inch aluminum (1mm) plate. I needed a hole of 15/16th (23mm) and this was one of the cheapest bits I could find with that size. By the fourth hole it felt like the drill bit got dull and I had to go slower with drill press to get through. It did serve the purpose and I completed the job, but I thought this would definitely last a lot longer considering I was drilling very soft, thin metal and was being very gentle with it, not forcing it hard at all.

I'm and elctrican and use good name brand tools all day long. My apprentice used this bit to cut though sheet metal siding on a garage like paper thin and it dulled out. I used a brand new one to cut a knock out in a metal gutter and it dulled after 1 hole. Can't even get it to cut anymore. My Lenox step bit has been through hell and back and cut over 100 holes in thicker metal enclosure and still rips. This bit is trash, I only bought it because of the quick connect so I can throw and extention on it when needed in walls through hard to reach studs and what not. Nope, they both are on their way to a landfill.

I cannot speak to the durability, as I was looking for an inexpensive bit to do a one time project and could not justify the more expensive ones... so if it happened to get dull quickly after a couple uses it wouldn't matter. However it did not dull at least on me for this one time use.I drilled a hole through a 1/16 inch steel pipe in order to weld a threaded port on. I kept it lubed on each step with PB Blaster, it worked very well.If it holds up to multiple uses I'll give it 5 stars

This bit made 7/8'' holes in two stainless steel fryer pots (homebrewing kettles). The thickest pot wall (1mm / 18 gauge) was challenging to do, but it worked. The bit's only downside is the steps are somewhat difficult to correlate with the markings (stop your drilling early, "one step too soon").Equipment:-- The titanium bit-- Small bit for pilot hole (around 1/16'')-- Hand drill (corded)-- 3 in 1 oil-- Safety goggles (also suggest a mask)Procedure was1) mark 7/8'' step with sharpie for better visibility2) hole punch with a couple hammer whacks3) drill small pilot hole (maybe 1/16'')4) drill with titanium bit and frequent oil re-apply5) stop about one step "too soon" and re-assessSummary:Positive: I gave this bit a tough job and it worked.Limitations: Step markings could be better, and 1mm steel did grab this bit several times.

I have snapped two of these in a month on 18 & 20 gauge sheet metal. Using m18 impact that could be why but shank should withstand that bit should break on edges first I would think. Replaced no issues but have other smaller steps that work fine but wanted a bigger hole. Will be looking elsewhere as I'm usually in a lift and don't have room for all power tools.

I needed this to drill a 1-1/8" hole in thin plastic, but I wanted to try 1-1/16" first, so I got to test both sizes with a single bit. I wouldn't be able to do that with a hole saw set, because once the first hole is drilled, there's nothing to center on for drilling the second hole. This was way, way cheaper than some of the other alternatives I saw, and it worked great.

Good value, needed 13/16” for 1/2” pipe tap conduit, only drilling into pvc, easy

Good quality

Works great for drilling into metal

I have been looking for something that would cut holes in pexi-glass. I've tried all sorts of drill bits, but this has been the best investment.

conform as expected