Customer Rating: 
Summary: High speed steel, high polish, very sharp
Comment: These are tailor-made for drilling pocket holes - not just because of the stepped design, but because of their high-polish, sharpness, and temper. Drilling a lot of pocket holes in a row generates a lot of heat, and these bits hold up to the heat and keep their edge.
If you are replacing a lost bit, be aware that this bit does not include the depth collar, which may be found here: Kreg H9474 Depth Collar w/ Allen® Wrench
Kreg also makes a square shank version, for quick-change bit holders: Kreg Hex Shank Pocket-Hole Drill Bit and a quick change set including the quick-change driving bit: Kreg Quick-Change Pocket-Hole Kit.
Finally, Kreg also makes cobalt steel bits that can be used either in their pocket hole machines or in a hand-held drill. These are exceptionally hard and will hold up to extreme use and high heat. They are expensive, though, and if you are going to use one in a hand-held drill, make sure you buy the right-hand twist version: Kreg DKDB 3/8-Inch Step Twist Drill Bit for Pocket Hole Machines.
Customer Rating:
Summary: This Step Drill Bit Gets The Job Done
Comment: These step bits work very well in the pocket hole jig. However, the small diameter tip can break off if one is not careful, so I keep a spare bit on hand.
Customer Rating:
Summary: great spare
Comment: I have one of the 'generic' pocket hole jigs you can get at most big box home improvement stores. when my original bit broke, I was in the middle of a project on a rare day off, so I had to buy a whole other jig set ($30) in order to keep going. So I decided a spare would be a good idea. This is the best price on a spare bit I could find. The Kreg bit seems to be a little sharper than the generic one that came with my jig, so the generic bit is now my backup.
It's a good idea to keep one extra around. They are good bits, but the tip is definitely the weak point of the entire system. hopefully the kreg bit is a little better made.
Customer Rating:
Summary: Kreg pocket hole bit
Comment: Tried other manufacturers but recommend using only this Kreg step drill bit. The metal seems to be harder and the pilot hole a better length than other step drill bits.
Customer Rating:
Summary: Top Tools
Comment: Outstanding tool and superior quality. (I needed spare bits - they occasionally dull and on rare occasion, when pushed too hard in very hard wood, the tip may break) I laid my hands on a Kreg Jig about 7 years ago and had to have one. Now it is one of the most used tools in my shop. I build furniture and Cabinets, and have found the quality of my product has increased and the speed of production has trippled. What a Tool, I cannot say enough good about it. Buy one and use it! You will not be sorry.
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