Bosch Professional 19pc. HSS-Cobalt ProBox Metal Drill Bit Set (for Stainless Steel, Ø 1-10 mm, Accessories Drill Driver and Drill Stand)

I got these 3 years before for a place I was working at, as a control panel wire man, only Just over £42 then, the price has changed a lot , but here is still the cheapest place to buy them, I was so impressed with the Bosch drill bits, I had to get some for myself, you do have to always use oil/cutting grease when using them, also remember that this is a very hard bit so not as flexible as some so no sideways drilling, or you may brake them but they do cut very well, when I was working I was drilling stainless steel cabinets and I never broke one, others users at work did, I don't know how as one broke a 8mm bit, I think he may have tried to enlarge a hole by using it sideways and moving it around, so I had to order them some more I got them the 19 bit size, But I have got myself now the 25 bit set and very glad I did, Yes I have other drill bits, but after using these you will not want any other bits, I did order a no name set from eBay that said that they are colbolt, but when they arrived they had HSS on the shank no CO, for cobolt, I complained and got a full refund and got to keep them, most are still unused but 2 or 3 have snapped, as they do not cut as well as these, yes you do get what you pay for, I hope these will keep me going for some time as a electronic hobbyist at home, I will not lend these out only the cheaper set of bits, I did look on the sellers website to see if he was selling these cheaper but they were not, Amazon was £5 cheaper and prime delivery, Thanks Dave 2E0DMB

Goede boren vooral tegenover tin gecoate boren.

Great, sharp and durable

If you need metal drill bits that drill more than a hole without wondering about, very good option. The small one are not the most resistant ones, but I guess it is normal

Für den privaten Einsatz absolut überzeugend. Die Bohrer wirken hochwertig, sind sauber verarbeitet und schneiden zuverlässig – auch in härteren Materialien. Klar muss man sagen: selbst gute Bohrer können schnell stumpf werden, wenn man sie falsch benutzt. Wichtig ist die richtige Handhabung. Zu viel Druck schadet, aber zu wenig ist auch schlecht, weil der Bohrer dann eher reibt statt schneidet und dadurch heiß wird. Gerade ansetzen und konstant arbeiten macht einen großen Unterschied. Eine Kühlung ist stark zu empfehlen – Schneidöl oder etwas Vergleichbares ist wichtig, sonst überhitzt das Ganze sehr schnell. Wenn man das beachtet, halten die Bohrer deutlich länger aus. Für den Preis und den Zweck wirklich eine solide Wahl.