BOSCH BL21A 21-Piece Assorted Set Black Oxide Metal Drill Bits with Included Case for Applications in Light-Gauge Metal, Wood, Plastic

Good for wood, plastic, and metal. I have used these for several drill outs of stripped screws and various projects around the house. I bought a second set for work.

Bought this set and a set of Dewalt. These outperformed the Dewalt in every way.Great bits, highly recommend!

Bought these because I I’ve been through TWO DEWALT drill bit sets the 1/2 and 3/8 bits I use mainly for pilot holes for bolts heavy and it cuts like butter in wood but in metal ok slow using oil and I was drilling in both materials metal I have to speed up for the breakthrough or if you don’t you can risk of breaking the tip of and I tried them on a medium piece of metal and drilled through it slowly but surely probably just me and I was drilling through my older previous bits in metal FULL THROTTLE real fast mainly use them in my 1/2 Bauer 6.5 amp cored drill which I’ve had the thing burning grey smoke through some THICK steel and besides dewalt’s other quality bits sawzall grinder blades etc.. the last set I had the 1/2 tip in it was wore out QUICKLY after going slow to medium speed with the cored drill in some 4x4’s but the money was very worth it and just never tried Bosch tools ever I did considered trying it but the material is black oxide and I’ve heard titanium is an first entry coating and the black oxide coating is the next level up and then cobalt (if it’s industrial) bits preferably matco or professional drill bit brand I saw on Reddit people talking about on project farm and got these because on the scale he had on the screen Bosch was second in line and even Bosch sawzall blades are good and Milwaukee reason why I don’t but Milwaukee brand bits because you pay 50 dollars and up for an 20 piece set without an 1/2 bit I think but versatility it’s very good for wood on for metal like thin metal thick get industrial cobalt grade metal bits and I’m kinda a diy person but then a jerry rig heavy duty guy with stuff and odd in jobs and I try to get the best of stuff that I can afford but I give four stars because on metal the dewalt ones cut better and last longer but the dewalt have been going down hill and or getting crappy with me like cutting through thick industrial plates of steel so I tried these and they good maybe pretty good I guess there not like my favorite dewalt witch was mine favorite but it won’t hurt to try and people on Reddit rave about Bosch stuff overall I recommend these if you’re tired of the dewalt stuff not satisfying your mighty tasks not heavy duty use.

Hard to say anything negative except they are in the box securely. A little too securely. They are quite hard to get out. However for me the quality is really good ,exceptionally sharp. The flats at the base of the bit prevent the bit from turning in a normal drill. I've used drill bits without for the past 50 years and having to tighten the chuck while drilling a hole ,or the bit coming out of the chuck is no fun. Excellent quality for the money.

Plenty has already been spoken in the reviews about just how durable and sharp these beauties are, and they certainly are that. But I specifically just wanted to add that I purchased these for a mini benchtop drill press because the bits I had were consistently overheating and wearing out (despite oiling) and had a very hard time getting through tougher metals. I popped these Bosch bits in and with a little oil and at a medium speed, these went so easily and cleanly right through a titanium knife scale (multiple times), nearly 1/4" thick. If you need to step up your drill bit set to get through tougher materials, then this is one you can depend on!

Las e usado muchas veces y no se han gastado.

The first drill bits I've bought in many years. The old ones were almost useless The last time I used them. Hardly made it through wood. I checked to see which ones the guy on Project Farm on youtube recommends. He does a good job and these were the best. And they are wonderful to use. Like going through butter. Very sharp and very hard metal. These will last a long time.

Great general purpose bits, placed in a box that was just too big!Everything changes, just not always for the better. My old set came in a smaller all blue box, The clear lid on this box looks good, But its not something you would put in your carry bag.It might be good for the work bench! But most have a larger index box near the press.I'm returning it the same day that I picked it up.It may work for you, Good luck and good night.