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You can use the included chuck if you want to use these same bits to make changing bit sizes faster in a drill that has a normal Jacobs chuck. It's an indication that you have to take extra care with any small diameter bit. I use this set with a Bosch Litheon pocket drill/screwdriver. But the quality of these is certainly good based on my experience drilling into Southern yellow pine, a fairly hard wood.
I's completely satisfactory and it easily and securely clips in and out of the quick-change chuck on the drill/driver. (I suppose you could also use the chuck and bits in a drill press). The chuck will also take screwdriver bits as well as combination drill bit & countersink for # 6, #8, etc. wood screws if the bits are made to the same quick-release standard, which is widely available.One of the reviewers complained that the smallest bit broke the first time he used it.
You get all you need and nothing you don't need. See that review.And, if I was to just want to buy these bits, why make me buy the chuck. Get a nice little box to store them.The bits I have used are of the high quality Bosch usually provides. I bought the 27-piece kit that has the chuck and four of these bits. Either all or none would have made more sense. My bad. I haven't worked out the price, but I wouldn't be surprised if they weren't the same or even cheaper. That is all good, but Bosch needs to rethink their kit offerings.
That was stupid. If I bought a new quick-change drill, which is the reason for these bits after all, then I wouldn't want the chuck.And the packaging is awful. Quality is always worth three stars, but I expect more out of this company, so off go two stars. Why not at least make it a nice drill holder that is useful to store the bits and not just another plastic piece of uselessness.My suggestion is to go to the store and buy bits and drills separately.
I've been using this drill set regularly for about 3 years, and have broken only one bit (the smallest and most fragile one, of course). I use them mostly for wood, plastic, and aluminum, but switch to non-hex titanium-coated bits for drilling through hard steel. I use hex-drive bit holders, and am amazed how quickly I can switch bits and get on with the work. The biggest advantages for me are: No hassling with a chuck key, and no bits slipping in the chuck.
I would have given this bit set a higher rating, if one of the small bits hadn't broken off the first time I used it. There is no way to replace it with a new bit.
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