I have seen a few unhappy comments about the chuck not holding the bits. Here are two tips that will have the chuck holding the bits tight: 1) place the forward/reverse switch in its middle position when you tighten (or remove) bits. This prevents the chuck from turning the motor when you hand tighten the bit. All your hand power goes into tightening the bit, not turning the motor. It works. I've never had a bit get loose after figuring this out. 2) Use bits that have a 3-sided base. Once tightened in the 3 pronged chuck, they can not slip. There are many brands that sell these for sizes 1/4" and larger. Below 1/4" they are almost always round. Hand tightening (see #1) will do the trick. By the way, I really like this drill. With the 1.5amp battery it is a nice weight for home use. If you are a pro, a 3amp or a 4amp don't add too much weight but make the run times extraordinary. The precision of the variable speed trigger and the clutch settings are a real boost to quality work - far fewer stripped screws even with the outrageous torque this HD drill delivers. Take the money you save buying this drill and buy top quality bits. You will get highly satisfying performance.
The size and power of the drill are good; on the other hand, DRILL BITS ARE COMING LOOSE ALL THE TIME!!! Therefore, I DO NOT recommend this drill.