The BLACK+DECKER BEHS02K-QS is a drill that you can use for 3 different types of jobs: drilling, hammer drilling, and chiseling. This version is a little more powerful than the BEHS01K-QS, so you can drill bigger holes with it and the strength is greater at 2.2 joules. This makes the 800W combi hammer the right tool for the devoted DIYer who plans on doing more than just drill holes. You can attach drill heads or chisels in the SDS-Plus chuck. This type of drill head prevents your drill from coming loose during heavy work. Finally, in addition to a case, the BEHS02K-QS also comes with a side handle. You can adjust this to the angle in which you're working for a good posture. Or, take it off completely if you don't need it.