SDS Drills | Hammer Drills | Drills | Screwfix- ozito 3 mode hammer drill chisel attachment ,An SDS drill is the perfect tool for heavy duty jobs when extra power is required. Allowing for a more powerful hammer action than conventional drills and with the functions of drilling, hammer drilling and chiselling, an SDS hammer drill or SDS hammer chisel will …Hammer Drills. What is it Used for? Hammer Drill vs …Another key difference is that rotary hammer drills come with a hammer only mode. Usually, these tools have 3 mode settings; drill only, drill with hammering action, and hammer only. You can also use a rotary hammer as a mini jackhammer. Generally unless you a professional; a rotary hammer simply will not be useful enough for you.