3PCS HSS Spiral Step Drill Bit Sets, SS SHOVAN 4-Flute Metal Drill Bits, 1/4" Hex Shank, Metric 4-32mm Cone Cutter, Hole Cutter for Sheet Metal, Plastic, Steel Plate

These bits work well in metal or wood and, as the steps are marked in millimetres, accurately drill or enlarge holes. Great quality!

These worked better than I expected and cut really well once it bit. Nice and sharp product for the price.

Yes this item meet my expectation well made comes with a holder very sharp

Great product

Last set has lasted nearly 2 years. I just used them to put 6 6mm holes in 5mm thick steel, cut through it like butter and that's after I've been using them for 2 years. Only just need to buy replacement due to snapping a drill bit on the same steel. Couldn't believe the difference in speed between these and the normal HSS drill bits, I won't use anything else for metal going forwards (unless I need a 5mm hole lol). The elongated hole is the one that had the snapped drill bit in, it took me ages to get it out so ignore that. Only tool used here was the stepper bits

Burn out very quick and become dull

These are the best I've used no problems makes a perfect size hole.

Does what says on the tin, perfect for the job I needed it for.

I needed to make a large hole in a plastic piece on my Vespa to install a USB outlet and the hole required to fit was rather large. A normal drill bit was not going to work in this case, but these step bits did the trick. Very sharp and they easily cut through the plastic and I had a perfect install of my USB port. Care must be used when using these as they are very sharp and you can easily go a bit too far if you're not careful. I recommend.

Macht was es soll - bohrt in Stufen Löcher!

Ottimo set, ottimo prezzo

Goede produkt, scherpe prijs

Rien à signaler avec ce prix. Peut-être pas la meilleure matière mais fonctionne très bien, j'ai testé sur une feuille de métal d'épaisseur d'environ 1mm