The Advantek Workshop Drill Bit set offers 115 titanium-coated high speed drill bits along with 210 additional bits of the same quality - giving you all the replacement bits you'll ever need in the most popular sizes. For use in either 3/8in. or 1/2in. drills to bore into steel, wood or plastic. Diameter in. 1/16-1/2, Includes qty. 327, Case Included Yes, Material Steel. 29 fractional bits, 1/16in. through 1/2in. Number bits, #1 through #60 Letter bits, A through Z
Average Customer Rating:
(3 Reviews) 3
Rating Summary(3 reviews)
1 of 3(33%)would recommend this product to a friend.
So far, have only used a few of these bits. The first one was used taking off the backing plate from drum brakes on my trailer. The bit was smoked in record time. I don't know where the titanium is, but it's not at the tip of the bit. Tried a few others on metal and was not impressed. I am use to a higher grade bit, so I shouldn't have been surprised by these low cost ones. My error. They do give you a lot of them, so I'm hoping that for lighter weight materials, they will hold up.
I ordered several sets of these dril bits for my shop. We have used them extensively. They are a great value for the money and seemed to have held up well so far. It sure is nice to have the replacement bits right there for when you break a small drill bit. You won't find a better deal on a 327 piece drill titanium drill bit set (I looked!)
The bits contained in this set are not acceptable for the use in which one would assume lettered and numbered drills would be used. These bits appear to be hand sharpened and exihibit several types of defects that are the result of that sharpening process. For instance, the the heels or trailing edges of some of the bits are equal to or higher than the cone surface that forms the cutting edge or lip. Without the proper clearance between the lip and heel the bits wIll not cut. This problem can be present on one flute of a single bit but not the other flute - one side/lip is cutting the other is not. Some of the bits are sharpened so that lip/cutting edge on one flute is of greater length than the other. This causes the point of the bit to be off center. In my opinion these bits will "work " for drilling pilot holes in 2x4s if one is building a deck, etc., however, if one plans to use them to drill a precise hole in a piece of stock be prepared to resharpen the bit.