toolant Four Spiral Flute Cobalt Step Drill Bit(Pro), 1/4"-3/4" Impact Ready Unibit Step Drill Bit, 1/4" Hex Shank Step Bits for Metal, Stainless Steel, Aluminum, Plastic

These relatively inexpensive bits outperform very high dollar carbide machinist bits, and other much more expensive cobalt bits. The cut so fast that the material barely has any chance to get hot which makes them last forever. I've been using them not for several months and I am very sincerely impressed. It's really hard to trust sellers these days. I think I paid 60 bucks to try them in my body shop just as a chance they might work on the lighter sheet metal and they performed so well and lasted so long I have started using them in my machine shop. They are suitable for cutting harder than mild steel, alloys and stainless with no issue whatsoever. I cannot speak highly enough of how surprised and utterly impressed I am with the performance. The most surprising part is the cost! They are the cheapest bits I own and they are also the best drill bits I own! I'm putting together a list to start replacing my professional machinist quality drill bits with these as they go bad and dull. They cost less than sharpening my bits and I have yet to dull any of these as of yet. Very surprised, impressed, and happy with them! I wish more things were like this. I'm happy I took a chance and bought these taking a low risk chance that had really taught me a wonderful lesson.

High value, easy to use, WORKS FANTASTIC. had to drill holes into steel trailer, after using a normal drill bit I purchased this bit. AMAZING. would advise to use drill oil, I just dipped the tip into the bottom I got at Home Depot, keeps the bit cooler, cuts easier, and doesn't get the metal your drilling into as hot. Never used one of these STEP BITS before. DEFINITE MUST. I have had no problems with this brand. cut speed is INCREDIBLE.

This tool definitely helped me with what I needed. I have a smaller stepper drill bit and could not open a big enough hole for the work I was doing to my car. The drill bit is very sturdy and cuts through metal pretty easy.

Very impressed with its durability and works well with my 1/4 inch impact driver.

Wow! I bought this with low expectations. I work for Square D, we do bus and retrofills on old gear. This are life savers! My Milwaukee bits overheat, dull and break! All the time. But this set are indestructible. I have never drilled through copper bus with and impact- like drilling through butter. I told my coworker, I had to review this product. Had to make 4 holes on double 1/4 inch copper bus! Pre drilled, Milwaukee was struggling and broke a few! Installed the stepbit, it was probably hungry cuz it ate the copper! Definitely buying again! They are still sharp! And strong!

I am in the automotive electronics industry. I have used different types and brands of step bits for the last 20 years. Most of them turn to garbage after drilling through semi thick metal once or twice. And it ruins the tip. I have only used this new one on types of plastic and twice on sheet metal in the body of a vehicle. So far this bit works better than any I have ever used. It is so sharp you must be careful using it on plastic because it will cut a hole bigger than you want very quickly if you're not careful. I hope I have success in keeping it sharp using it on metal. Here's update on review. I have now used this bit drilling through multiple metal panels on automobiles. I have not had one issue with this product darling or causing me any problems. I don't know how it will do drilling through 8 inch solid steel but through body panels and floor panels on cars it does exceptionally well. . Here's an update from the middle of July 2023. This bit is really rugged. It will drill through 8 inch to quarter inch solid steel on a truck steak bed. I drilled the pilot hole with an 8 inch bit and used it to make the hole up to a 3/8. This bit is extremely Sharp and extremely brittle. I advise spraying silicone on it and keep your drill moving slowly watching it peel the metal. When you're going to that slow speed with this bit it works wonders. It's amazing. But I usually use it for thin metal in vehicles and it has no problem whatsoever. It gets seven Stars as far as I'm concerned. But be careful it is brutal when you are drilling big holes it can hang up and snap.

This is an awesome step drill, Just make sure that you have a heavy duty drill to run it.

Does what it is supposed to

Bra pris och det ser ut att kunna utföra jobbet bättre. Tänderna på den här borren har en annorlunda konstruktion. Ser framemot att testa produkten.

It was quite good for the short time it lasted The hex shank broke off on the light duty work enlarging a hole from 6 to 8 mm on a light fitting update the seller has told me he will replace to step drill

Decent cobalt bit cut through stainless easily. Little and light use so far but it showed no signs of dulling immediately like a cheap one would.

Se ha producido una vibración en el corte y en mango ha partido, después de 8 ó 10 agujeros de poco diámetro Actualización : puesto en contacto con el vendedor, me han devuelto el importe, después de 3 meses de la compra

Ich bin wirklich begeistert, der geht durch meine 3mm starken 4-kant Rohre wie nichts. Hatte schon wesentlich schlechtere zu höheren Preisen in Gebrauch. Leider konnte der Bohrer meiner Ungeschicklichkeit nicht standhalten, weshalb ich auch keine Aussage zur Langlebigkeit machen kann, nach ein paar Bohrungen fiel mir der Akkubohrer samt Stufenbohrer vom Tisch auf den Betonboden: Spitze abgebrochen. Scheiße gelaufen, eben den Bohrer noch mal bestellt. Klare Empfehlung meinerseits.