Hammer drill or rotary hammer

Most homers don't need an SDS rotary hammer, but this is when you do. Let's get after it. If you're drilling a few small holes in cinder block or masonry, a drill with the hammer function will usually get the job done. If you're drilling larger holes or you want to chip away at some concrete or you just do this kind of stuff every single day, an SDS rotary hammer is a better choice. A rotary hammer requires a special kind of bit called an SDS bit. SDS stands for slotted drive system and what it is, it's these grooves cut in here that allow the bit to move back and forth offering a more impactful punch. This hammer drill uses vibration to drive into the concrete as where this rotary hammer uses a piston that constantly pounds this bit forward. So, if you're drilling all day or you need larger holes, get yourself a rotary hammer. If you're just drilling small holes in cinder block, you're good with the hammer drill. Anyways, I got stuff to do. I'll catch you guys later. Peace.