3PCS HSS Step Bits Set High Speed Steel Step Drill Bits Set - (4-12mm, 4-20mm and 4-32 mm) Cone Drill Bits Hole Cutter for Wood Stainless Steel Sheet Metal

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.

Excellent product value for your money needed asap for bathtub tap fittings did the job easily great set for your drill box

Ottimo set, ottimo prezzo

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

Yo la he probado con madera y va genial. Para superficies mas gruesas debes hacer una pasada en cada sentido y queda genial. Al llevar 3 brocas en el caso de maderas mas gruesas, puedes utilizarlas para vaciar el interior si fuera necesario. La verdad es que desconfiaba por el precio pero tienen muy buena calidad.Totalmente recomendable.