3PCS HSS Step Bits, 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 by SS SHOVAN

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.

For the price these are possibly unbeatable. I use these for professional electrical installation work. I only use for thin plastic and unhardend metal materials. Very versatile. They make a lot of holes in metal before blunting for the price point. They are cheap and can take some abuse if you needed to drill something you wouldn't want to blunt expensive cutters on. If you loose then no problem either. Thats why these are my go to atm. Buying expensive is sometimes a waste of money. If you are drilling metal sheet or softer than hardned metal materials these are excellent.

Ottimo set, ottimo prezzo

Sehr gutes stabiles Produkt. Für mich absolut ausreichend!

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