Chicago-Latrobe 550 115 Piece Heavy-Duty Cobalt Steel Jobber Length Drill Bit Set, Gold Oxide Finish, Round Shank, Spiral Flute, 135 Degree Point Angle

Great drill bits - I've got no complaints. This is definitely an above average set of bits. I haven’t dulled one bit yet, with average use, although I did break one of the smaller bits, but that was my fault. I know I've used one of the bits to drill over 100 holes, in regular mild steel, and it's still going strong.The bits walk a little, from time to time, but maybe that's me or my drill press.I'd highly recommend this set. I've also been able to buy replacement bits on Amazon, single size.If you're a home owner/home shop you'll appreciate these bits. They are more of a professional set of bits, and the price reflects it, but you'll never regret buying them.

Got tired of buying the junk bits at various stores or driving a 20 miles for a specific size bit that was not included in the smaller sets. Or trying to decide which "color" in the cheap sets was really right and "trick advertising names for various unknown metals. Check their web site if you want to know more. They actually tell you what they are and the various coating they offer and their uses. Imagine that!!! Great quality. Nice well labeled case. Beware as their are a lot and I mean a lot of sets out there packaged to mimic this set.

It is such a pleasure to be able to buy a quality tool made in the USA. These buts are the real deal. And although the may seem pricy at first, they are worth it.

Fantastic machinist drill bits. The assortment is the best I've seen. The quality is fantastic. I highly recommend you get a set of these drill bits yourself. This seller is great too

500 is little to expensive but u get what u pay forthe set is for heavy industrial users.Not for homeowners