Cobalt Drill Bit Set, 29Pcs M35 High Speed Steel Bits for Hardened Metals, Stainless Steel, Cast Iron and Wooden Plastics, with Metal Index Storage Box, 1/16"-1/2"

Works great. Highly recommend.

I work with metal daily, so I go through a lot of drillbits. cobalt is great for working with metal but it can be brittle if you don’t know what you’re doing. I read some complaints about people snapping their bits and I have yet to do so, and have been using them for months. For the most part, they stay sharp and cut well as long as you take care of them and use them at the proper speed and pressure. The size of the set provides the sized bits needed so that I can properly drill and tap a hole. The one major problem I have with this set is the rounded shaft. All bits are completely round and if your bit bites in the medal, the drill chuck will spin and strip on the shaft. This will happen often especially with the larger bits. That’s annoying in itself but when makes it really bad is the fact that the drillbit sizes are etched exactly in that area, so you essentially strip off the drillbit size label very easily, and the only way to make sure you have the correct size, is you must stay organized and keep it in its case and its proper spot. For this reason, I highly recommended purchasing the option with the metal case provided. Overall, it’s a great set and I’d likely buy it again based on its price point and quality.

My dad loves it. Comes exactly as pictured. Get this if you want to make your dad or loved one happy!

Showed up with the #55-60 bits fallen out of the their holders. I was only able to find the #58-60 bits in the case and packaging. There seems to be no replacement option, only a return/refund which overall kind of sucks since I am in Hawaii and need this kit, hence why I ordered it. I would rather be able to keep and use what I have while waiting on just the needed replacement bits rather than send the entire set back and have to order another set. Packaging was all in great shape except the foam around the "iron" case itself, then end of broken off. The "iron" heavy duty case is nothing special after all, just bent sheet metal. The interior divider between the SAE and Letter sides bits was bent though it had a thin piece of foam packing over it as well. I have not actually used a bit yet, just very disappointed with what I received. I will return these and find another another set to order, or order separate SAE, Letter, and numbered bit sets over time. I really wanted to love this set. Price was too good to be true once again I guess.

I purchase this set just under a year ago. I have not use these drill bits but a couple of times and 4 have already broken. 10/6/2025 Update. Macxcoip Cobalt Drill Bits set seller reached out address any issues or concerns in my satisfaction with the product I received. They offer a full refund or to issue a new set of Drill bits. In a couple of days, I received the new drill bits in the mail, and I must say that these have changed my mind with the quality of Macxcoip Drill Bits. I guess the original set I received was a fluke in the quality, because the replacement bits issued area awesome and seem to be holding up great. Good company that stands behind their product and customer satisfaction.