NEIKO 10181A Step Drill Bit Set, 3 Piece, Spiral Grooved for Faster Drilling, Step Bits for Stainless Steel, Metal, Wood, Plastic, Unibit Cone Drill Bits with 31 Step Sizes Total

We were working on a craft project that required holes through small sheet metal covers to mount solar lights. The holes were 11/16 inch diameter and these step bits cut a nice, clean round hole in the metal. The bits have angled shafts to prevent rotation in the drill chuck, and seem sturdy and sharp. For cutting something thicker, like wood, I think it would work easier to see clearly when the various step levels occur, because you have more resistance. But overall these worked great for our project, and a new addition to the variety of drill bits we need and use around our DIY projects.

I'm not a professional carpenter but I always seem to be building and fixing things just the same. I have owned various tools, drills and drill bits over the years yet somehow I had never heard of a "step" drill bit. Where have I been? A need came about where I had to widen the diameter of some pre-existing 1/2" holes I had drilled in 20/24 gauge steel. These holes were being placed in the back walls of a Tennesco metal office drawer ( B0057NFQWM ) - the back wall and the back of the drawer. So I attach this Neiko Titaniaum Step Drill bit to my Ryobi 9.6V cordless drill and to my amazement it quickly & effortlessly removes all the "slag" left over from the initial drilling attempt. It then widens the holes very quickly in progressively larger increments as I press the drill harder and just persist for a minute of drilling. I am impressed! This * EXACTLY * solved my installation problem. The fact that it does it's job so quickly and cleanly and I don't have to do any metal filing cleanup work made my day. It does not warp the metal either. Yes, it throws curlicue metal shavings around but that's a given. Easier to clean those up than the micro-fine metal filings from a conventional drill bit. TIP1: Since I started with a pre-existing pilot hole I cannot speak to whether this will work without a pilot hole. I suspect it would be * wise * to have * some * kind of basic pilot hole - even if it's 1/16 inch. TIP2: I did not use any lubricant's on the bit, but in retrospect, for the sake of bit longevity, it probably would have been a good idea. NOTE: My 9.6V cordless drill balked at doing the last two (widest opening) "steppings" but rather than getting out the electric powered drill, I said "good enough" at that point. The holes I had created were more than wide enough to feed Ethernet cables w/jacks through or 14/3 SJT cord - with a fair amount of remaining "slack" space. Highly recommended if you need to make clean holes in 20 to 24 gauge sheet metal.

Step bits have been great only issue with storage case

They do they job

These drills are fantastic, wished I purchased years ago. Very high quality, sharp and easily cut holes in the light material without grabbing and tearing. Highly recommend

Nice quality fair price

I needed to slightly enlarge the 1 inch hole of a cast iron barbell weight plate that wont accept my 1 inch barbell. I was only using the last level (1-1/8 inch) of this bit to take off maybe a half-millimeter. After about 15 minutes, this bit was able to grind through about half the plate's thickness before the bit no longer had any bite. Afterwards I used a 1 inch flapper wheel abrasive grinder which smoothed the cut edge but it would take many wheels and hours to only use that to grind out the hole, and likely burn out my hammer drill. A half-round file was too big to file out the hole. Otherwise, I bet this bit does a great job on steel, just not cast iron which is asking too much.

I bought this so I could put a new grommet into my Weber Smokey Mountain Smoker. My model was an older model and didn't come with the grommet that allows for temp probes to pass through and monitor the temp of the inside of the smoker and the meat being smoked. When I purchased the grommets (it came 2 to a pack), Amazon recommended this drill bit for making the hole in the smoker to allow for mounting the new grommet. I already have a drill bit like this one from a name brand, BUT it wasn't big enough to accommodate the grommet I was purchasing. So, since I needed this to make my project work and since it was about 25% of what I paid for my other one, I bought it. Also, I factored in that I was probably only going to need to use it once, ever, so it made sense to get this product at the same time of purchase as the grommets. When the grommets and drill bit arrived, I was pleased and excited. I cleaned up the outside of the smoker where I was going to drill and then put some painters tape over the designated spot to try and prevent the enamel from chipping. I then started to drill. The tape seemed like a good idea at the time, but the tape quickly peeled and got stuck in the drill bit. I eventually pulled the tape off completely about 1/3 of the way through for drilling. I needed to make a hole that is 1 and 1/4" in diameter, which was the second to last step on the bit. I was trying not to go too fast 'cause I was worried I would get overzealous and drill the hole too big and then I'd be Really Mad 'cause I would have messed up my smoker. So I took my time and kept on going. When I got about 3/4 of the way through, the bit was not very smooth - not like my other name brand bit. I was getting even more scared that I was going to mess up my smoker and it was making me nervous using this drill bit. However, I had already come this far and there was no turning back at this point. So, I pressed on, but gently. The biggest problem I was encountering was that the bit would catch on the opening it had created with each step that it passed through on the bit and I had to be careful not to cut my fingers, mess up my drill or mess up my smoker. It was frustrating because it wasn't a smooth drilling process at all. However, I eventually got to the stopping point and took the bit out. I could see a nasty burr of sharp metal hanging from the opening I had just created. So I put the drill on the other side of the hole and very gently drilled from that side just long enough to get rid of it and make the opening fairly smooth. Then, I was finally able to install the grommet and breathe a sigh of relief that I had not messed up my smoker. I share all of this with you, the reader, to let you know that this product did work, BUT it was not very smooth and if the name brand bit I had was big enough, I would gladly have used it instead. Knowing what I know now, I would caution you on purchasing this and remember my experience with this drill bit. It Can do the job, but you have to be super careful with it, or you might mess something up that you can't fix later and that would be very, very bad, I would imagine. I give this product 3/5 stars, because it did do the job and the price was nice, but you get what you pay for and you definitely have to be careful with it.

Bom vendedor

Excellent quality, well priced and delivered on time.

Great set, was skeptical at first but happy with the results. Good piece of kit and nice options…

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I tessted this on a piece of three eight flat bar it cut through easy enough with a little cutting compound J managed to cut a hole the full diameter of the step bit great piece of kit.